Potenziali Standard di riduzione in volt (a 25°C e 1 atm)

Potenziali Standard di riduzione in volt (a 25°C e 1 atm)

Afnio

Hf⁴⁺ + 4e^- Hf        - 1,700

HfO²⁺ + 2H⁺ + 2e^- Hf + H₂O                 - 1,724

HfO₂ + 4H⁺ + 4e^- Hf + 2H₂O                 - 1,505

HfO(OH)₂ + 4H⁺ + 4e^- Hf + 3H₂O         - 1,685

HfO(OH)₂ + H₂O + 4e^- Hf + 4OH^-        - 2,51

Alluminio

Al³⁺ + 3e^- Al        - 1,662

Al(OH)₃ + 3e^- Al + 3OH^-                      - 2,30

Al₂O₃ + 6H⁺ + 6e^- 2Al + 3H₂O              - 1,494

Al(OH)₃ + 3H⁺ + 3e^- Al + 3H₂O           - 1,472

AlF₆^2- + 3e^- Al + 6F^-                              - 2,069

Al(OH)₄^- + 3e^- Al + 4OH^-                      - 2,33

H₂AlO₃^- + H₂O + 3e^- Al + 4OH^- - 2,33

Americio

Am³⁺ + 3e^- Am    - 2,320

Am⁴⁺ + e- Am³⁺   +2,181

Am₂O₃ + 6H⁺ + 6e^- 2Am + 3H₂O          - 1,676

AmO₂ + 4H⁺ + e^- Am³⁺ + 2H₂O +1,856

AmO₂⁺ + 4H⁺ + 2e^- Am³⁺ + 2H₂O         +1,721

Am₂²⁺ +4H⁺ + 3e^- Am³⁺ + 2H₂O           +1,694

Am(OH)₃ + 3H⁺ + 3e^- Am + 3H₂O       - 1,878

Am(OH)₄ + 4H⁺ + e^- Am³⁺ + 4H₂O       +1,746

AmO₂OH + 5H⁺ + 2e^- Am³⁺ + 3H₂O +1,639

AmO₂(OH)₂ + H⁺ + e^- AmO₂OH + H₂O +1,930

Antimonio

Sb⁵⁺ + 2e- Sb³⁺    +0,75

HSbO₂ + 3H⁺ + 3e^- Sb + 2H₂O              +0,230

SbO₂^- + 2H₂O + 3e^- Sb + 4OH^-              - 0,665

Sb₂O₃ + 6H⁺ + 6e^- 2Sb + 3H₂O             +0,152

SbO₃^- + 6H⁺ + 5e^- Sb + 3H₂O                +0,409

Sb₂O₅ + 4H⁺ + 4e^- Sb₂O₃ + 2H₂O          +0,671

Sb + 3H⁺ + 3e^- SbH₃                              - 0,510

Sb(Cl)₄^- + 3e^- Sb + 4Cl^-                         +0,17

Argento

Ag⁺ + e^- Ag         

Ag²⁺ + 2e^- Ag      +1,3895

AgO + 2H⁺ + 2e^- Ag + H₂O +1,2855

AgO^- + 2H⁺ + e^- Ag + H₂O +2,220

Ag₂O + H₂O + 2e^- 2Ag + 2OH^- +0,345

Ag₂O₃ + H₂O + 2e^- 2AgO + 2OH^-         +0,739

AgCN + e^- Ag + CN^-                              - 0,017

Arsenico

As₂O₃ + 6H⁺ + 6e^- 2As + 3H₂O             +0,234

As₂O₅ + 10H⁺ + 10e^- 2As + 5 H₂O +0,429

HAsO₂ + 3H⁺ + 3e^- As + 2H₂O             +0,2476

AsO₂^- + 4H⁺ + 3e^- As + 2H₂O               +0,429

AsO₂^- + 2H₂O + 3e^- As + 4OH^-              - 0,675

H₃AsO₄ + 5H⁺ + 5e^- As + 4H₂O +0,3724

AsO₄^3- + 8H⁺ + 5e^- As + 4H₂O              +0,6484

AsO₄^3- +2H₂O +2e^- AsO₂^- + 2OH^-         - 0,71

HAsO₄^2- + 7H⁺ + 5e^- As + 4H₂O           +0,5008

H₂AsO₄^- + 6H⁺ + 5e^- As + 4H₂O +0,4152

As + 3H⁺ + 3e^- AsH₃                              - 0,608

Astato

At₂ + 2e^- 2At^-       +0,2

2HAtO + 2H⁺ + 2e^- At₂ + 2H₂O +0,7

2AtO^- + 2H₂O + 2e^- At₂ + 2OH^- 0,0

AtO₃^- + 2H₂O + 4e^- AtO^- + 4OH^-           +0,5

HAtO₃ + 4H⁺ + 4e^- HAtO + 2H₂O         +1,4

Attinio

Ac³⁺ + 3e^- Ac       - 2,6

Azoto

2NO + 4H⁺ + 4e^- N₂ + 2H₂O                 +1,678

N₂O + 2H⁺ + 2e^- N₂ + H₂O                    +1,766

2NO₂ + 8H⁺ + 8e^- N₂ + 4H₂O                +1,363

3N₂ + 2H⁺ + 2e^- 2HN_3(g)                         - 3,40

2HNO₂ + 6H⁺ + 6e^- N₂ + 4H₂O              +1,4535

2HNO₃ + 10H⁺ + 10e^- N₂ + 6H₂O         +1,2457

2NO₃^- + 12H⁺ + 10e^- N₂ + 6H₂O           +1,2457

2NO₃^- + 6H₂O + 10e^- N₂ + 12OH^-         +0,252

N₂O₄ + 8H⁺ + 8e^- N₂ + 4H₂O                 +1,356

N₂ + 8H⁺ + 6e^- 2NH₄⁺                            +0,2746

N₂ + 8H₂O + 6e^- 2NH₄OH + 6OH^-         - 0,7361

N₂ + 2H₂O + 6H⁺ + 6e^- 2NH₄OH          +0,092

2NO₂^- + 4H₂O + 6e^- N₂ + 8OH^-             +0,4156

2NO₂^- + 8H⁺ + 6e^- N₂ + 4H₂O                +1,5197

N₂ + 6H⁺ + 6e^- 2NH_3(g)                          +0,057

3N₂ + 2H⁺ + 2e^- 2HN_3(aq)                       - 3,09

CNO^- + H₂O + 2e^- CN^- + 2OH^-              - 0,970

HCNO + 2H⁺ + 2e^- HCN + H₂O            +0,0215

Bario

Ba²⁺ + 2e^- Ba       - 2,906

Ba(OH)₂ + 2e^- Ba + 2OH^-                      - 2,81

BaO + 2H⁺ + 2e^- Ba + H₂O                    - 1,509

Ba + 2H⁺ + 2e^- BaH₂                             +0,685

Ba²⁺ + 2H⁺ + 4e^- BaH₂                           - 1,110

BaO₂ + 4H⁺ + 2e^- Ba²⁺ + 2H₂O              +2,419

BaOH⁺ + 2e^- Ba + OH^-                          - 2,937

Berillio

Be²⁺ + 2e^- Be       - 1,847

BeO + 2H⁺ + 2e^- Be + H₂O                    - 1,785

BeO + H₂O + 2e^- Be + 2OH^-                 - 2,613

BeO₂^2- + 4H⁺ + 2e^- Be + 2H₂O              - 0,909

Be₂O₃^2- + 6H⁺ + 4e^- 2Be + 3H₂O           - 1,387

Be₂O₃^2- + 3H₂O + 4e^- 2Be + 6OH^-        - 2,629

Berkelio

Bk³⁺ + 3e^- Bk       - 2,4

Bk⁴⁺ + e^- Bk³⁺      +1,6

Bismuto

Bi³⁺ + 3e^- Bi        +0,286

Bi₂O₃ + 6H⁺ + 6e^- 2Bi + 3H₂O              +0,371

Bi₂O₃ + 3H₂O + 6e^- 2Bi + 6OH^- - 0,457

Bi₂O₄ + 8H⁺ + 8e^- 2Bi + 4H₂O              +0,6382

Bi₂O₄ + 8H⁺ + 2e^- 2Bi³⁺ + 4H₂O           +1,910

Bi₂O₅ + 10H⁺ + 10e^- 2Bi + 5H₂O          +0,832

Bi(OH)₃ + 3H⁺ + 3e^- Bi + 3H₂O +0,478

Bi + 3H⁺ + 3e^- BiH₃                               - 0,800

Bi(Cl)₄^- + 3e^- Bi + 4Cl^-                          +0,16

BiO⁺ + 2H⁺ + 3e^- Bi + H₂O                   +0,320

BiOH²⁺ + H⁺ + 3e^- Bi + H₂O                 +0,254

Boro

B³⁺ + 3e^- B           - 0,73

B₂O₃ + 6H⁺ + 6e^- 2B + 3H₂O                 - 0,841

BO_(g) + 2H⁺ + 2e^- B + H₂O                    +0,806

H₃BO_3(s) + 3H⁺ + 3e^- B + 3H₂O - 0,869

H₂BO₃^- + H₂O + 3e^- B + 4OH^-               - 1,791

H₂BO₃^- + 4H⁺ + 3e- B + 3H₂O              - 0,687

HBO₃^- + 5H⁺ + 3e^- B + 3H₂O                - 0,437

BO₃^3- + 6H⁺ + 3e^- B + 3H₂O                  - 0,165

2BO₃^3- + 18H⁺ + 12e^- B₂H₆ + 6H₂O      - 0,154

B₄O₇^2- + 14H⁺ + 12e^- 4B + 7H₂O          - 0,792

HB₄O₇^- + 25H⁺ + 24e^- 2B₂H₆ + 7H₂O   - 0,490

5B + 9H⁺ + 9e^- B₅H₉                              - 0,189

10B + 14H⁺ + 14e^- B₁₀H_14(g)                  - 0,220

H₃BO_3(aq) + 3H⁺ + 3e^- B + 3H₂O - 0,8698

10B + 14H⁺ + 14e^- B₁₀H_14(s)                  - 0,201

Bromo

Br_2(l) + 2e^- 2Br^-    +1,0652

Br_2(aq) + 2e^- 2Br^- +1,0873

2HBrO + 2H⁺ + 2e^- Br_2(l) + 2H₂O          +1,596

2BrO^- + 4H⁺ + 2e^- Br_2(l) + 2H₂O +2,11

2HBrO₃ + 10H⁺ + 10e^- Br_2(l) + 6H₂O +1,487

2BrO₃^- + 12H⁺ + 10e^- Br_2(l) + 6H₂O       +1,495

BrO₃^- + 3H₂O +6e^- Br^- + 6OH^-              + 0,61

3Br_2(l) + 2e^- 2Br₃^- +1,096

5Br_2(l) + 2e^- 2Br₅^- +1,056

BrO^- + H₂O + 2e^- Br^- + 2OH^-                 +0,76

Cadmio

Cd²⁺ + 2e^- Cd       - 0,4029

CdO + 2H⁺ + 2e^- Cd + H₂O                   +0,063

Cd(OH)₂ + 2e^- Cd + 2OH^-                     - 0,809

HCdO₂^- + 3H⁺ + 2e^- Cd + 2H₂O             +0,583

Cd + H⁺ + e^- CdH                                  - 2,417

Calcio

Ca²⁺ + 2e^- Ca       - 2,869

Ca⁺ + e^- Ca           - 3,80

Ca + 2H⁺ +2e^- CaH₂                              +0,776

Ca(OH)₂ + 2e^- Ca + 2OH^-                      - 3,02

Ca(OH)₂ + 4H⁺ + 4e^- CaH₂ + 2H₂O       - 0,706

CaO + 2H⁺ + 2e^- Ca + H₂O                    - 1,902

CaO₂ + 2H⁺ + 2e^- CaO + H₂O               - 1,260

CaOH⁺ + 2e^- Ca + OH^-                          - 2,906

Californio

Cf³⁺ + 3e^- Cf        - 2,1

Carbonio

CO_(g) + 2H⁺ + 2e^- C + H₂O                    +0,5178

CO_2(g) + 4H⁺ + 4e^- C + H₂O                   +0,2073

CO₃^2- + 6H⁺ + 4e^- C + 3H₂O                  +0,4754

CO₃^2- + 3H₂O + 4e^- C + 6OH^-               - 0,7667

HCO₃^- + 5H⁺ + 4e^- C + 3H₂O                +0,323

H₂CO₃ + 4H⁺ + 4e^- C + 3H₂O                +0,228

HCOOH + 2H⁺ + 2e^- C + 2H₂O             +0,627

HCOO^- + 3H⁺ + 2e^- C + 2H₂O               +0,724

C + 4H⁺ + 4e^- CH₄                                 - 0,1316

Cerio

Ce³⁺ + 3e^- Ce       - 2,483

Ce⁴⁺ + e- Ce³⁺      +1,61

Ce(OH)₃ + 3e^- Ce + 3OH^-                      - 2,87

Ce₂O₃ + 6H⁺ + 6e^- 2 e + 3H₂O               +2,046

2CeO₂ + 2H⁺ + 2e^- Ce₂O₃ + H₂O           +1,559

CeOH³⁺ + H⁺ + e^- Ce³⁺ + H₂O                +1,7134

Ce(OH)₂²⁺ + 2H⁺ + e^-  Ce³⁺ + 2H₂O      +1.731

Cesio

Cs⁺ + e^- Cs - 2,923

Cloro

Cl₂ + 2e^- 2Cl^-      +1,3595

2HClO + 2H⁺ + 2e^- Cl₂ + 2H₂O             +1,63

2ClO^- + 4H⁺ + 2e^- Cl₂ + 2H₂O               +2,072

Cl₂O + 2H⁺ + 2e^- Cl₂ + H₂O                  +1,714

2HClO₂ + 6H⁺ + 6e^- Cl₂ + 4H₂O           +1,640

2ClO₂^- + 8H⁺ + 6e^- Cl₂ + 4H₂O             +1,678

2ClO₃^- + 12H⁺ + 10e^- Cl₂ + 6H₂O         +1,470

ClO₃^- + 3H₂O + 6e^- Cl^- + 6OH^-              +0,62

2ClO₄^- + 16H⁺ + 14e^- Cl₂ + 8H₂O         +1,389

ClO₄^- + H₂O + 2e^- ClO₃^- + 2OH^-           +0,36

Cl₂ + 2H⁺ + 2e^- 2HCl_(g)                          +0,987

2ClO₂ + 8H⁺ + 8e^- Cl₂ + 4H₂O              +1,549

Cobalto

Co²⁺ + 2e^- Co       - 0,277

Co³⁺ + e- Co²⁺     +1,808

Co(OH)₂ + 2H⁺ + 2e^- Co + 2H₂O          +0,095

Co(OH)₂ + 2e^- Co + 2OH^-                     - 0,73

Co₃O₄ + 8H⁺ + 2e^- 3Co²⁺ + 4H₂O          +2,112

Co₂O₃ + 6H⁺ + 2e^- 2Co²⁺ + 3H₂O          +1,746

CoO₂ + 4H⁺ + 2e^- Co²⁺ + 2H₂O             1,612

Co₂O₃ + H₂O + 2e^- 2HCoO₂^-                 - 0,128

CoO + 2H⁺ + 2e^- Co + H₂O                   +0,1666

Cromo

Cr³⁺ + 3e^- Cr        - 0,744

Cr³⁺ + e^- Cr²⁺       - 0,408

CrO + 2H⁺ + 2e^- Cr + H₂O                    - 0,588

Cr₂O₃ + 6H⁺ + 6e^- 2Cr + 3H₂O              - 0,579

2CrO₂ + 2H⁺ + 2e^- Cr₂O₃ + H₂O           +1,060

Cr(OH)₃ + 3H⁺ + 3e^- Cr + 3H₂O           - 0,654

Cr(OH)₃ + 3e^- Cr + 3OH^-                      - 1,48

H₂CrO₄ + 6H⁺ + 6e^- Cr + 4H₂O             +0,295

HCrO₄^- + 7H⁺ + 6e^- Cr + 4H₂O +0,303

CrO₄^2- + 8H⁺ + 6e^- Cr + 4H₂O               +0,366

CrO₂^- + 4H⁺ + 3e^- Cr + 2H₂O                - 0,213

CrO₃^3- + 6H⁺ + 3e^- Cr + 3H₂O               +0,374

Cr₂O₇^2- + 14H⁺ + 12e^- 2Cr + 7H₂O        +0,294

Curio

Cm³⁺ + 3e^- Cm    - 2,70

Disprosio

Dy³⁺ + 3e^- Dy      - 2,353

Dy₂O₃ + 6H⁺ + 6e^- 2Dy + 3H₂O - 1,956

Dy(OH)₃ + 3e^- Dy + 3OH^-                     - 2,78

Erbio

Er³⁺ + 3e^- Er        - 2,296

Er₂O₃ + 6H⁺ + 6e^- 2Er + 3H₂O              - 1,918

Er(OH)₃ + 3e^-  Er + 3OH^-                      - 2,75

Europio

Eu³⁺ + 3e^- Eu       - 2,407

Eu²⁺ + 2e^- Eu       - 3,395

Eu₂O₃ + 6H⁺ + 6e^- 2Eu + 3H₂O             - 2,002

Eu(OH)₃ + 3e^- Eu + 3OH^-                      - 2,83

Fermio

Fm³⁺ + 3e^- Fm     - 2,1

Ferro

Fe²⁺ + 2e^- Fe        - 0,4402

Fe³⁺ + e^- Fe²⁺       +0,771

Fe₂O₃ + 6H⁺ + 6e^- 2Fe + + 3H₂O          - 0,051

Fe₃O₄ + 8H⁺ + 8e^- 3Fe + 4H₂O              - 0,085

Fe₃O₄ + 2H⁺ + 2e^- 3FeO + H₂O             - 0,197

Fe(OH)₃ + 3H⁺ + 3e^- Fe + 3H₂O           +0,059

Fe(OH)₂ + 2e^- Fe + 2OH^-                      - 0,877

HFeO₂^- + 3H⁺ + 2e^- Fe + 2H₂O             +0,493

FeOH²⁺ + H⁺ + e^- Fe²⁺ + H₂O                +0,914

Fe(OH)₂⁺ + 2H⁺ + e^- Fe²⁺ + 2H₂O         +1,191

Fe(OH)₃ + e^- Fe(OH)₂ + OH^- - 0,56

FeO₄^2- + 8H⁺ + 3e^- Fe³⁺ + 4H₂O +2,20

FeO₄^2- + 4H₂O + 3e^- Fe(OH)₃ + 5OH^-   +0,72

Fluoro

F₂ + 2e^- 2F^-          +2,866

F₂O + 2H⁺ + 2e^- F₂ + H₂O                     +1,439

F₂ + 2H⁺ + 2e^- 2HF_(g)                             +2,806

F₂ + 2H⁺ + 2e^- 2HF_(aq)                           +3,053

F₂ + H⁺ + 2e^- HF₂^-                                  +2,979

Fosforo

H₃PO₄ + 5H⁺ + 5e^- P + 4H₂O                - 0,411

H₂PO₄^- + 6H⁺ + 5e^- P + 4H₂O                - 0,386

HPO₄^2- + 7H⁺ + 5e^- P + 4H₂O                - 0,3016

PO₄^3- + 8H⁺ + 5e^- P + 4H₂O                   - 0,156

H₃PO₃ + 3H⁺ + 3e^- P + 3H₂O                - 0,502

H₂PO₃^- + 4H⁺ + 3e^- P + 3H₂O                - 0,467

HPO₃^2- + 5H⁺ + 3e^- P + 3H₂O                - 0,346

H₃PO₂ + H⁺ + e^- P + 2H₂O                    - 0,508

H₂PO₂^- + 2H⁺ + e^- P + 2H₂O                  - 0,391

P + 3H⁺ + 3e^- PH₃                                  - 0,063

HPO₃^2- + 2H₂O + 2e^- H₂PO₂^- + 3OH^-    - 1,565

H₂PO₂^- + e^- P + 2OH^-                             - 2,05

Gadolinio

Gd³⁺ + 3e^- Gd      - 2,397

Gd₂O₃ + 6H⁺ + 6e^- 2Gd + 3H₂O - 1,994

Gd(OH)₃ + 3e^- Gd + 3OH^-                     - 2,82

Gallio

Ga³⁺ + 3e^- Ga       - 0,560

Ga³⁺ + e^- Ga²⁺      - 0,677

Ga₂O + 2H⁺ + 2e^- 2Ga + H₂O                - 0,401

Ga(OH)₃ + 3H⁺ + 3e^- Ga + 3H₂O           - 0,419

Ga₂O₃ + 6H⁺ + 6e^- 2Ga + 3H₂O - 0,485

H₂GaO₃^- + H₂O + 3e^- Ga + 4OH^-           - 1,219

HGaO₃^2- + 5H⁺ + 3e^- Ga + 3H₂O           +0,088

GaO₃^3- + 6H⁺ + 3e^- Ga + 3H₂O              +0,319

GaO₂^- + 4H⁺ + 3e^- Ga + 2H₂O               - 0,114

GaOH²⁺ + H⁺ + 3e^- Ga + H₂O                +0,479

Ga(OH)₄^- + 3e^- Ga + 4OH^- - 1,326

GaO⁺ + 2H⁺ + 3e^- Ga + H₂O                  - 0,415

Germanio

Ge²⁺ + 2e^- Ge       +0,24

Ge⁴⁺ + 2e^- Ge       +0,124

GeO_(Brown) + 2H⁺ + 2e^- Ge + H₂O          - 0,286

GeO_(Yellow) + 2H⁺ + 2e^- Ge + H₂O          - 0,130

GeO_2(esag.) + 4H⁺ + 4e^- Ge + H₂O           - 0,202

GeO_2(tetrag.) + 4H⁺ + 4e^- Ge + H₂O          - 0,246

GeO₃^2- + 6H⁺ + 4e^- Ge + 3H₂O              +0,132

HGeO₃^- + 5H⁺ + 4e^- Ge + 3H₂O - 0,056

H₂GeO₃ + 4H⁺ + 4e^- Ge + 3H₂O - 0,182

Ge + 4H⁺ + 4e^- GeH₄                             - 0,867

Indio

In³⁺ + 3e^- In          - 0,3386

In³⁺ + e^- In²⁺         - 0,49

In²⁺ + e^- In⁺          - 0,40

In⁺ + e^- In             - 0,14

In₂O₃ + 6H⁺ + 6e^- 2In + 3H₂O               - 0,190

In(OH)₃ + 3H⁺ + 3e^- In + 3H₂O             - 0,172

In(OH)₃ + 3e^- In + 3OH^-                        - 1,00

In + H⁺ + e^- InH   - 1,951

InOH²⁺ + H⁺ + 3e^- In + H₂O                  - 0,266

Iodio

I_2(s) + 2e^- 2I^-          +0,5355

I_2(g) + 2e^- 2I^-          +0,636

I_2(aq) + 2e^- 2I^-        +0,615

I_2(g) + 2H⁺ + 2e^- 2HI                               +0,087

2HIO + 2H⁺ + 2e^- I_2(s) + 2H₂O               +1,439

2IO^- + 4H⁺ + 2e^- I_2(s) + 2H₂O                 +2,090

2HIO₃ + 10H⁺ + 10e^- I_2(s) + 6H₂O          +1,186

2IO₃^- + 12H⁺ + 10e^- I_2(s) + 6H₂O            +1,195

IO₃^- + 3H₂O + 6e^- I^- + + 6OH^-                +0,26

2HIO₄ + 14H⁺ + 14e^- I_2(s) + 8H₂O          +1,3114

2IO₄^- + 16H⁺ + 14e^- I_2(s) + 8H₂O             +1,3258

2HIO₅^2- + 18H⁺ + 14e^- I_2(s) + 10H₂O      +1,3956

2IO₅^3- + 20H⁺ + 14e^- I_2(s) + 10H₂O        +1,49

2H₅IO₆ + 14H⁺ + 14e^- I_2(s) + 12H₂O      +1,311

H₃IO₆^2- + 2e^- IO₃^- + 3OH^-                      +0,7

2I⁺ + 2e^- I_2(s)         +1,357

3I₂ + 2e^- 2I₃^-         +0,534

Iridio

Ir³⁺ + 3e^- Ir           +1,156

IrO + 2H⁺ + 2e^- Ir + H₂O                        +0,87

IrO₂ + 4H⁺ + 4e^- Ir + 2H₂O                    +0,926

Ir₂O₃ + 6H⁺ + 6e^- 2Ir + 3H₂O                +0,926

Ir₂O₃ + 3H₂O + 6e^- 2Ir + 6OH-              +0,098

IrO₄^2- + 8H⁺ + 3e^- Ir³⁺ + 4H₂O               +1,448

IrCl₆^3- + 3e^- Ir + 6Cl^-                             +0,77

Itterbio

Yb³⁺ + 3e^- Yb      - 2,267

Yb²⁺ + 2e^- Yb      - 2,797

Yb₂O₃ + 6H⁺ + 6e^- 2Yb + 3H₂O - 1,902

Yb(OH)₃ + 3e^- Yb + 3OH^-                     - 2,73

Ittrio

Y³⁺ +3e^- Y           - 2,372

Y₂O₃ + 6H⁺ + 6e^- 2Y + 3H₂O                - 1,676

Y(OH)₃ + 3H⁺ + 3e^- Y + 3H₂O              - 1,981

Y(OH)₃ + 3e^- Y + 3OH^-                        - 2,81

Lantanio

La³⁺ +3e^- La         - 2,522

La₂O₃ + 6H⁺ + 6e^- 2La + 3H₂O             - 1,856

La(OH)₃ + 3H⁺ + 3e^- La + 3H₂O           - 2,069

La(OH)₃ + 3e^- La + 3OH^-                      - 2,90

Litio

Li⁺ + e- Li            - 3,0401

Li + H⁺ + e^- LiH +0,726

Li⁺ + H⁺ + 2e^- LiH                                 - 1,161

Lutezio

Lu³⁺ + 3e^- Lu       - 2,255

Lu₂O₃ + 6H⁺ + 6e^- 2Lu + 3H₂O             - 1,892

Lu(OH)₃ + 3e^- Lu + 3OH^-                      - 2,72

Magnesio

Mg²⁺ + 2e^- Mg     - 2,363

Mg(OH)₂ + 2e^- Mg + 2OH^-                   - 2,690

MgOH⁺ + 2e^- Mg + OH^-                        - 2,440

Manganese

Mn²⁺ + 2e^- Mn     - 1,180

Mn³⁺ + e^- Mn²⁺    +1,51

Mn⁴⁺ + 4e^- Mn     +0,195

MnO + 2H⁺ + 2e^- Mn + H₂O                 - 0,652

Mn₂O₃ + 6H⁺ + 6e^- 2Mn + 3H₂O          - 0,305

MnO₂ + 4H⁺ + 4e^- Mn + 2H₂O              +0,024

Mn₃O₄ + 8H⁺ + 8e^- 3Mn + 4H₂O           - 0,436

Mn(OH)₂ + 2H⁺ + 2e^- Mn + 2H₂O        - 0,727

Mn(OH)₃ + 3H⁺ +  3e^- Mn + 3H₂O - 0,157

Mn(OH)₄ + 4H⁺ +  4e^- Mn + 4H₂O        +0,214

MnOOH + 3H⁺ + 3e^- Mn + 2H₂O - 0,335

MnO(OH)₂ + 4H⁺ + 4e^- Mn + 3H₂O +0,116

HMnO₂^- + 3H⁺ + 2e^- Mn + 2H₂O          - 0,163

MnO₄^- + 8H⁺ + 5e^- Mn²⁺ + 4H₂O           +1,507

MnO₄^2- + 5H⁺ + 4e^- HMnO₂^- + 2H₂O    +1,234

MnOH⁺ + H⁺ + 2e^- Mn + H₂O               - 0,873

Mn(OH)₂ + 2e^- Mn + 2OH^- - 1,555

MnO₂ + 2H₂O + 2e_- Mn(OH)₂ + 2OH^-  - 0,05

Mn(OH)₃ + e^- Mn(OH)₂ + OH^- +0,15

MnO₄^- + 2H₂O + 3e^- MnO₂ + 4OH^-       +0,588

MnO₄^- + e^- MnO₄^2-                                +0,564

MnO₄^2- + 2H₂O + 2e^- MnO₂ + 4OH^- +0,60

Mercurio

Hg₂²⁺ + 2e^- 2Hg +0,788

2Hg²⁺ + 2e^- Hg₂²⁺                                  +0,920

Hg²⁺ + 2e^- Hg      +0,854

HgO + H₂O + 2e^- Hg + 2OH^-                 +0,0977

HgO + 2H⁺ + 2e^- Hg + H₂O                   +0,926

Hg(OH)₂ + 2H⁺ + 2e^- Hg + 2H₂O          +1,034

Molibdeno

Mo³⁺ + 3e^- Mo     - 0,200

MoO₂ + 4H⁺ + 4e^- Mo + 2H₂O              - 0,072

MoO₃ + 2H⁺ + 2e^- MoO₂ + H₂O +0,320

H₂MoO₄ + 6H⁺ + 3e^- Mo³⁺ + 4H₂O       - 0,623

HMoO₄^- + 7H⁺ + 3e^- Mo³⁺ + 4H₂O        +0,390

MoO₄^2- + 8H⁺ + 6e^- Mo + 4H₂O +0,154

Neodimio

Nd³⁺ + 3e^- Nd      - 2,431

Nd(OH)₃ + 3H⁺ + 3e^- Nd + 3H₂O          - 2,013

Nd(OH)₃ + 3e^- Nd + 3OH^-                     - 2,84

Nd₂O₃ + 6H⁺ + 6e^- 2Nd + 3H₂O - 1,811

Nettunio

Np³⁺ + 3e^- Np      - 1,856

Np⁴⁺ + e^- Np³⁺      +0,147

NpO₂⁺ + 4H⁺ + e- Np⁴⁺ + 2H₂O             +0,749

Np(OH)₃ + 3H⁺ + 3e^- Np + 3H₂O          - 1,420

NpO₂²⁺ + e^- NpO₂⁺                                 +1,130

NpO₂ + H₂O + H⁺ + e^- Np(OH)₃ - 0,962

NpO₂OH + H⁺ + e^- NpO₂ + H₂O +1,253

Np(OH)₄ + H⁺ + e^- Np(OH)₃ + H₂O      - 0,928

NpO₂(OH)₂ + H⁺ + e^- NpO₂OH + H₂O  +1.1310

Nichel

Ni²⁺ + 2e^- Ni        - 0,257

NiO + 2H⁺ + 2e^- Ni + H₂O                    +0,116

Ni(OH)₂ + 2H⁺ + 2e^- Ni + 2H₂O +0,110

Ni(OH)₂ + 2e^- Ni + 2OH^-                      - 0,72

Ni₂O₃ + 6H⁺ + 2e^- 2Ni²⁺ + 3H₂O           +1,753

Ni₃O₄ + 8H⁺ + 2e^- 3Ni²⁺ + 4H₂O           +1,977

HNiO₂^- + 3H⁺ + 2e^- Ni + 2H₂O +0,648

Niobio

Nb³⁺ + 3e^- Nb      - 1,099

NbO + 2H⁺ +2e^- Nb + H₂O                    - 0,733

Nb₂O₅ + 10H⁺ + 10e^- 2Nb + 5H₂O        - 0,644

NbO₂ + 2H⁺ + 2e^- NbO + H₂O               - 0,625

Nobelio

No³⁺ + 3e^- No      - 2,5

Olmio

Ho³⁺ + 3e^- Ho      - 2,319

Ho₂O₃ + 6H⁺ + 6e^- 2Ho + 3H₂O - 1,937

Ho(OH)₃ + 3e^- Ho + 3OH^-                     - 2,77

Oro

Au⁺ + e^- Au          +1,691

Au³⁺ + 3e^- Au      +1,498

AuO₂ + 4H⁺ + e^- Au³⁺ + 2H₂O               +2,507

2AuO₂ + 2H⁺ + 2e^- Au₂O_3(a + H₂O       +2,630

2AuO₂ + 2H⁺ + 2e^- Au₂O_3(b + H₂O       +2,465

AuO₂ + H₂O + H⁺ + e^- Au(OH)₃ + 2,305

H₂AuO₂^- + 4H⁺ + 2e^- Au⁺ + 3H₂O         +1,849

HAuO₃^2- + 5H⁺ + 2e^- Au⁺ + 3H₂O         +2,243

Osmio

H₂OsO₅ + 8H⁺ + 8e^- Os + 5H₂O +0,850

OsO₄^2- + 8H⁺ + 6e^- Os + 4H₂O              +0,994

OsO_4(s) + 2e^- OsO₄^2-                               +0,402

OsO_4(g) + 2e^- OsO₄^2-                               +0,463

OsO₄^2- + 4H⁺ + 2e^- OsO₂ + 2H₂O          +1,607

HOsO₅^- + H⁺ + 2e^- OsO₄^2- + H₂O          +0,714

OsO₅^2- + 2H⁺ + 2e^- OsO₄^2- + H₂O          +1,142

Os(OH)₄ + 4e^- Os + 4OH^-                      - 0,12

Ossigeno

O + 2H⁺ + 2e^- H₂O                                 +2,421

O₂ + 2H₂O + 4e^- 4OH^-                           +0,401

O₂ + 2H₂O + 4e^- 4OH^-             a pH = 7 +0,81

O₂ + 4H⁺ + 4e^- 2H₂O                             +1,229

O₂ + 4H⁺ + 4e^- 2H₂O         a pH = 7 +0,81

O₂ + 2H⁺ + 2e^- H₂O_2(aq)                         +0,6824

O₂ + e^- O₂^-            - 0,563

O₂ + H₂O + 2e^- HO₂^- + OH^-                    - 0,076

O₃ + 6H⁺ + 6e^- 3H₂O                             +1,511

O₃ + 2H⁺ + 2e^- O₂ + H₂O                       +2,076

H₂O₂ + 2H⁺ + 2e^- 2H₂O                         +1,776

O₃ + H₂O + 2e^- O₂ + 2OH^-                     +1,24

OH_(g) + H⁺ + e^- H₂O                               +2,85

HO_2(aq) + H⁺ + e^- H₂O₂                           +1,495

O₂ + 2H⁺ + 2e^- O + H₂O                        +0,037

HO₂^- + H₂O + e^- OH_(aq) + 2OH^-             - 0,245

HO₂^- + H₂O + 2e^- 3OH^-                          +0,878

H₂O₂ + H⁺ + e^- OH + H₂O                     +0,71

O₂^- + H₂O + e^- OH^- + HO₂^-                    +0,413

OH + e- OH^-        +2,02

2H₂O + 2e^- H₂ + 2OH^-                           - 0,8277

2H₂O + 2e^- H₂ + 2OH^-  a pH = 7 - 0,42

Palladio

Pd²⁺ + 2e^- Pd        +0,987

PdO + 2H⁺ + 2e^- Pd + H₂O                    +0,917

PdO₂ + 2H⁺ + 2e^- PdO + H₂O                +1,263

Pd(OH)₂ + 2H⁺ + 2e^- Pd + 2H₂O           +0,897

Pd(OH)₂ + 2e^- Pd + 2OH^-                      +0,07

2Pd + H⁺ + e^- Pd₂H                                +0,048

PdO₃ + 2H⁺ + 2e^- PdO₂ + H₂O              +2,030

PdCl⁺ + e^- Pd + Cl^-                                +0,771

PdCl₆^4- + 2e^- Pd + 6Cl^-                          +0,615

PdCl₄^2- + 2e^- Pd + 4Cl^-                          +0,591

PdCl₆^2- + 2e^- Pd + 6Cl^-                          +0,92

Piombo

Pb²⁺ + 2e^- Pb        - 0,1266

Pb⁴⁺ + 2e^- Pb²⁺     +1,670

PbO + H₂O + 2e^- Pb + 2OH^-                  - 0,580

PbO + 2H⁺ + 2e^- Pb + H₂O                    +0,248

PbO₂ + 4H⁺ + 2e^- Pb²+ + 2H₂O +1,455

Pb₃O₄ + 2H⁺ + 2e^- 3PbO + H₂O +0,972

Pb(OH)₂ + 2H⁺ + 2e^- Pb + 2H₂O           +0,277

HPbO₂^- + 3H⁺ + 2e^- Pb + 2H₂O             +0,702

PbO₃^2- + 3H⁺ + 2e^- HPbO₂^- + H₂O         +1,547

Pb(OH)₃^- (HPbO₂^- +H₂O) + 2e^- Pb + 3OH^-          - 0,54

Platino

Pt²⁺ + 2e^- Pt         +1,188

PtCl₄^2- + 2e^- Pt + 4Cl^-                            +0,73

PtBr₄^2- + 2e^- Pt + 4Br^-                           +0,581

PtI₄^2- + 2e^- Pt + 4I^-                                 +0,40

Pt(CN)₄^2- + 2e^- Pt + 4CN^-                      +0,09

PtCl₆^2- + 2e^- PtCl₄^2- + 2Cl^-                    +0,68

PtO + 2H⁺ + 2e^- Pt + H₂O                      +0,980

PtO₂ + 4H⁺ + 2e^- Pt²⁺ + 2H₂O               +0,837

Pt(OH)₂ + 2H⁺ + 2e^- Pt + 2H₂O             +0,98

Pt(OH)₂ + 2e^- Pt + 2OH^-                        +0,15

[Pt(CN)₄Cl₂]^2- + 2e^- Pt(CN)₄^2- + 2Cl^-    +0,89

PtI₆^2- + 2e^- PtI₄^2- + 2I^-                            +0,39

Plutonio

Pu³⁺ + 3e^- Pu        - 2,031

Pu⁴⁺ + e^- Pu³⁺       +0,97

PuO₂ + 4H⁺ + e^- Pu³⁺ + 2H₂O                +0,862

PuO₂²⁺ + 4H⁺ + 3e^- Pu³⁺ + 2H₂O           +1,017

Pu(OH)₃ + 3H⁺ + 3e^- Pu + 3H₂O -1,592

Pu(OH)₃ + 3e^- Pu + 3OH^- - 2,42

Pu(OH)₄ + 4H⁺ + e^- Pu³⁺ + 4H₂O          +1,182

PuO₂²⁺ + e^- PuO₂⁺                                  +0,928

PuO₂OH + H⁺ + e^- PuO₂ + H₂O             +1,908

PuO₂(OH)₂ + 2H⁺ + 2e^- PuO₂ + 2H₂O   +1,485

Pu(OH)₄ + e^- Pu(OH)₃ + OH^-                - 0,963

Polonio

Po²⁺ + 2e^- Po +0,651

Po³⁺ + 3e^- Po        +0,56

Po⁴⁺ + 4e^- Po        +0,76

PoO₂ + 4H⁺ + 4e^- Po + 2H₂O                 +0,724

PoO₃^2- + 6H⁺ + 4e^- Po + 3H₂O              +0,748

Po + 2H⁺ + 2e^- PoH₂                              - 1,000

PoO₃ + 2H⁺ + 2e^- PoO₂ + H₂O              +1,524

Po(Cl)₄^2- + 2e^- Po + 4Cl^-                       +0,38

Po(Cl)₆^2- + 2e^- Po(Cl)₄^2- + 2Cl^-             +0,72

Potassio

K⁺ + e^- K              - 2,931

K + H⁺ + e^- KH_(s)                                   +0,386

K⁺ + H⁺ + 2e^- KH_(s)                                - 1,270

Praseodimio

Pr³⁺ + 3e^- Pr         - 2,462

Pr⁴⁺ + e^- Pr³⁺        +2,860

Pr(OH)₃ + 3H⁺ + 3e^- Pr + 3H₂O - 2,018

Pr(OH)₃ + 3e^- Pr + 3OH^-                       - 2,85

Pr₂O₃ + 6H⁺ + 6e^- 2Pr + 3H₂O              - 1,829

PrO₂ + 4H⁺ + e^- Pr³⁺ + 2H₂O                 +2,761

Promezio

Pm³⁺ + 3e^- Pm     - 2,423

Pm₂O₃ + 6H⁺ + 6e^- 2Pm + 3H₂O           - 2,008

Pm(OH)₃ + 3e^- Pm + 3OH^-                    - 2,84

Protoattinio

Pa³⁺ + 3e^- Pa        - 1,95

Pa⁴⁺ + 4e^- Pa        - 1,7

PaO₂⁺ + 4H⁺ + 5e^- Pa + 2H₂O                - 1,0

PaO₂ + 4H⁺ + e^- Pa³⁺ + 2H₂O - 0,5

Radio

Ra²⁺ + 2e^- Ra       - 2,916

Ra⁺ + e^- Ra           - 3,859

RaO + 2H⁺ + 2e^- Ra + H₂O                    - 1,319

Rame

Cu⁺ + e^- Cu          +0,521

Cu²⁺ + 2e^- Cu       +0,337

CuO + 2H⁺ + e^- Cu⁺ + H₂O                    +0,620

CuO₂^2- + 4H⁺ + 2e^- Cu + 2H₂O              +1,515

Cu₂O + H₂O + 2e^- 2Cu + 2OH^-              - 0,358

2Cu(OH)₂ + 2e^- Cu₂O + H₂O + 2OH^-    - 0,080

Renio

Re + e^- Re^-           - 0,400

ReO₂ + 4H⁺ + 4e^- Re + 2H₂O                +0,2513

ReO₂ + 2H₂O + 4e^- Re + 4OH^-              - 0,577

ReO₄^- + 8H⁺ + 7e^- Re + 4H₂O               +0,362

ReO₄^- + 2H₂O + 3e^- ReO₂ + 4OH^-         - 0,594

2ReO₂ + 2H⁺ + 2e^- Re₂O₃ + H₂O           +0,375

ReO₃ + 2H⁺ + 2e^- ReO₂ + H₂O +0,392

ReO₂ + 4H⁺ + e^- Re³⁺ + 2H₂O                +0,157

ReO₄^2- + 8H⁺ + 3e^- Re³⁺ + 4H₂O           +0,795

ReO₄^- + 8H⁺ + 8e^- Re^- + 4H₂O               +0,273

Rodio

Rh⁺ + e^- Rh          +0,600

Rh²⁺ + 2e^- Rh       +0,600

Rh³⁺ + 3e^- Rh       +0,800

Rh₂O + 2H⁺ + 2e^- 2Rh + H₂O +0,796

Rh₂O₃ + 6H⁺ + 4e^- 2Rh⁺ + 3H₂O           +0,975

Rh₂O₃ + 2H⁺ + 2e^- 2RhO + H₂O +0,871

2RhO₄^2- + 10H⁺ + 6e^- Rh₂O₃ + 5H₂O    +2,211

RhO₄^2- + 4H⁺ + 2e^- RhO₂ + 2H₂O         +2,452

Rubidio

Rb⁺ + e^- Rb          - 2,925

Rb + H⁺ + e^- RbH                                  +0,317

Rb⁺ + H⁺ + 2e^- RbH                               - 1,304

Rutenio

Ru²⁺ + 2e^- Ru       +0,45

Ru³⁺ + e^- Ru²⁺      +0,2487

Ru(OH)₄ + 4H⁺ + 4e^- Ru + 4H₂O           +0,68

Ru₂O₃ + 6H⁺ + 6e^- 2Ru + 3H₂O +0,738

RuO₄^2- + 8H⁺ + 6e^- Ru + 4H₂O              +1,193

RuO₂ + 4H⁺ + 4e^- Ru + 2H₂O                +0,788

H₂RuO₅ + 4H⁺ + 4e^- RuO₂ + 3H₂O       +1,400

RuO₄^- + 4H⁺ + 3e^- RuO₂ + 2H₂O           +1,533

HRuO₅^- + H⁺ + e^- RuO₄^- + H₂O             +1,660

RuCl₅^2- + 3e^- Ru + 5Cl^-                         +0,601

Samario

Sm³⁺ + 3e^- Sm     - 2,414

Sm²⁺ + 2e^- Sm     - 3,121

Sm₂O₃ + 6H⁺ + 6e^- 2Sm + 3H₂O           - 2,004

Sm(OH)₃ + 3e^- Sm + 3OH^-                    - 2,83

Scandio

Sc³⁺ + 3e^- Sc        - 2,077

Sc(OH)₃ + 3e^- Sc + 3OH^-                      - 2,61

Sc(OH)₃ + 3H⁺ + 3e^- Sc + 3H₂O           -1,784

Sc₂O₃ + 6H⁺ + 6e^- 2Sc + 3H₂O              - 1,591

ScOH²⁺ + 3e^- Sc + H₂O                         - 1,980

Selenio

Se + 2e^- Se^2-         - 0,924

Se + H⁺ + 2e^- HSe^-                                 - 0,510

Se + 2H⁺ + 2e^- H₂Se_(aq)                          - 0,399

Se + 2H⁺ + 2e^- H₂Se_(g)                           - 0,369

SeO₃^2- + 6H⁺ + 4e^- Se + 3H₂O               +0,875

SeO₃^2- + 3H₂O + 4e^- Se + 6OH^-             - 0,366

HSeO₃^- + 5H⁺ + 4e^- Se + 3H₂O             +0,788

H₂SeO₃ + 4H⁺ + 4e^- Se + 3H₂O             +0,740

SeO₄^2- + 3H⁺ + 2e^- HSeO₃^- + H₂O         +1,075

SeO₄^2- + H₂O + 2e^- SeO₃^2- + 2OH^-         +0,05

HSeO₄^- + 3H⁺ + 2e^- H₂SeO₃ + H₂O       +1,090

Silicio

SiO_2(quarzo) + 4H⁺ + 4e^- Si + 2H₂O         - 0,857

H₂SiO₃ + 4H⁺ + 4e^- Si + 3H₂O              - 0,780

HSiO₃^- + 5H⁺ + 4e^- Si + 3H₂O               - 0,632

SiO₃^2- + 6H⁺ + 4e^- Si + 3H₂O                - 0,455

SiO₃^2- + 3H₂O + 4e^- Si + 6OH^-              - 1,697

Si + 4H⁺ + 4e^- SiH_4(g)                             - 0,102

SiF₆^2- + 4e^- Si + 6F^-                               - 1,24

Sodio

Na⁺ + e^- Na          - 2,7147

Na + H⁺ + e^- NaH_(s)                                +0,390

Na⁺ + H⁺ + 2e^- NaH_(s)                            - 1,162

Stagno

Sn²⁺ + 2e^- Sn        - 0,1375

Sn⁴⁺ + 2e^- Sn²⁺     +0,151

SnO + 2H⁺ + 2e^- Sn + H₂O                    - 0,104

SnO₂ + 4H⁺ + 4e^- Sn + 2H₂O                 - 0,106

Sn(OH)₄ + 4H⁺ + 4e^- Sn + 4H₂O           - 0,008

Sn(OH)₂ + 2H⁺ + 2e^- Sn + 2H₂O           - 0,091

Sn(OH)^3- (HSnO₂^- + H₂O) + 2e^- Sn + 3OH^-         - 0,909

HSnO₂^- + 3H⁺ + 2e^- Sn + 2H₂O             +0,333

SnO₃^2- + 6H⁺ + 2e^- Sn²⁺ + 3H₂O +0,844

SnF₆^2- + 4e^- Sn + 6F^-                             - 1,510

Sn(OH)₆^2- + 2e^- HSnO₂^- + H₂O + 3OH^- - 0,93

Stronzio

Sr²⁺ + 2e^- Sr         - 2,89

Sr(OH)₂ + 2H⁺ + 2e^- Sr + 2H₂O            - 2,047

Sr(OH)₂ + 2e^- Sr + 2OH^-                       - 2,875

Sr + 2H⁺ + 2e^- SrH₂                               +0,718

Sr²⁺ + 2H⁺ + 4e^- SrH₂                            - 1,086

SrO + 4H⁺ + 4e^- SrH₂ + H₂O                 - 0,477

SrO₂ + 2H⁺ + 2e^- SrO + H₂O                 +1,116

SrO₂ + 2H⁺ + 2e^- Sr(OH)₂                     - 1,491

SrOH⁺ + 2e^- Sr + OH^-                            - 2,913

Tallio

Tl⁺ + e^- Tl            - 0,336

Tl³⁺ + 2e^- Tl⁺       +1,252

Tl₂O + 2H⁺ + 2e^- 2Tl  + H₂O +0,512

Tl₂O₃ + 6H⁺ + 4e^- 2Tl⁺ + 3H₂O             +1,329

Tl(OH)₃ + 3H⁺ + 2e^- Tl⁺ + 3H₂O           +1,189

Tl(OH)₃ + 2H⁺ + 2e^- TlOH + 2H₂O       +0,778

Tl(OH)₃ + 2e^- TlOH + 2OH^-                  - 0,05

TlOH + e^- Tl + OH^-                              +0,343

Tantalio

Ta₂O₅ + 10H⁺ + 10e^- 2Ta + 5H₂O         - 0,812

Tecnezio

Tc²⁺ + 2e^- Tc        +0,400

TcO₂ + 4H⁺ + 4e^- Tc + 2H₂O                 +0,272

HTcO₄ + 3H⁺ + 3e^- TcO₂ + 2H₂O          +0,740

TcO₄^- + 8H⁺ + 7e^- Tc + 4H₂O                +0,472

HTcO₄ + H⁺ + e^- TcO₃ + H₂O                +0,707

Tellurio

Te + 2e^- Te^2-        - 1,143

Te⁴⁺ + 4e^- Te        +0,568

Te + 2H⁺ + 2e^- H₂Te_(g)                           - 0,718

2Te + 2e_- Te₂^2-     - 0,790

Te + 2H⁺ + 2e^- H₂Te_(aq)                         - 0,739

Te₂^2- + 4H⁺ + 2e^- 2H₂Te_(g)                      - 0,595

Te₂ + 2H⁺ + 2e^- H₂Te_2(g)                        - 0,365

Te₂^2- + 2H⁺ + 2e^- 2HTe^-                         - 0,795

TeO₂ + 4H⁺ + 4e^- Te + 2H₂O                 +0,529

H₂TeO₄ + 8H⁺ + 8e^- H₂Te_(aq) + 4H₂O +0,329

TeO₃^2- + 6H⁺ + 4e^- Te + 3H₂O              +0,827

HTeO₄^- + H⁺ + 2e^- TeO₃^2- + H₂O           +0,584

TeO₄^2- + 2H⁺ + 2e^- TeO₃^2- + H₂O          +0,892

HTeO₃^- + 5H⁺ + 4e^- Te + 3H₂O             +0,713

Terbio

Tb³⁺ + 3e^- Tb       - 2,391

Tb₂O₃ + 6H⁺ + 6e^- 2Tb + 3H₂O             - 1,999

Tb(OH)₃ + 3e^- Tb + 3OH^-                      - 2,79

Titanio

Ti²⁺ + 2e^- Ti         - 1,628

Ti³⁺ + 2e^- Ti²⁺      - 0,368

Ti⁴⁺ + e^- Ti³⁺        0,000

TiO + 2H⁺ + 2e^- Ti + H₂O - 1,306

Ti₂O₃ + 6H₊ + 6e^- 2Ti + 3H₂O              - 1,245

TiO₂ + 4H⁺ + 4e^- Ti + 2H₂O                  - 1,0726

2Ti₃O₅ + 2H⁺ + 2e^- 3Ti₂O₃ + H₂O         - 0,490

Ti₃O₅ + 4H₂O + H⁺ + e^- 3Ti(OH)₃         - 1,178

HTiO₃^- + 5H⁺ + 2e^- Ti²⁺ + 3H₂O           +0,362

Torio

Th⁴⁺ + 4e^- Th        - 1,899

ThO₂ + 4H⁺ + 4e^- Th + 2H₂O                - 1,789

Th(OH)₄ + 4H⁺ + 4e^- Th + 4H₂O           - 1,650

Th(OH)₄ + 4e^- Th + 4OH^-                      - 2,48

Tulio

Tm³⁺ + 3e^- Tm     - 2,278

Tm₂O₃ + 6H⁺ + 6e^- 2Tm + 3H₂O          - 1,913

Tm(OH)₃ + 3e^- Tm + 3OH^-                   - 2,74

Tungsteno (Wolframio)

WO₂ + 4H⁺ + 4e^- W + 2H₂O                 - 0,019

WO₃ + 6H⁺ + 6e^- W + 3H₂O                 - 0,090

2WO₃ + 2H⁺ + 2e^- W₂O₅ + H₂O - 0,029

WO₄^2- + 8H⁺ + 6e^- W + 4H₂O               +0,049

Uranio

U³⁺ + 3e^- U          - 1,798

U⁴⁺ + e^- U³⁺          - 0,607

UO + 2H⁺ + 2e^- U + H₂O                       - 1,438

UO₂ + 4H⁺ + 4e^- U + 2H₂O                   - 1,444

U(OH)₄ + 4H⁺ + 4e^- U + 4H₂O              - 1,353

UO₃ + H₂O + 2H⁺ + 2e^- U(OH)₄ +0,475

U + 3H⁺ + 3e^- UH₃                                 +0,256

UO₂²⁺ + 4H⁺ + 2e^- U⁴⁺ + 2H₂O              +0,327

UO²⁺ + 4H⁺ + e^- U⁴⁺ + 2H₂O                 +0,612

U₂O₃ + 6H⁺ + 6e^- 2U + 3H₂O                - 1,346

U₃O₈ + 4H⁺ + 4e^- 3UO₂ + 2H₂O +0,533

UO₄^2- + 4H₂O + 2e^- U(OH)₄ + 4OH^-      - 1,618

UO₃^.H₂O + 2H⁺ + 2e^- U(OH)₄        +0,186

UO₃^.H₂O = H₂UO₄ = UO₂(OH)₂               

Vanadio

V²⁺ + 2e^- V          - 1,186

V³⁺ + e^- V²⁺          - 0,256

V₂O₂ + 4H⁺ + 4e^- 2V + 2H₂O                - 0,820

VO²⁺ + 2H⁺ + e^- V³⁺ + H₂O                   +0,359

V(OH)⁴⁺ + 2H⁺ + e^- VO²⁺ + 3H₂O         +1,00

V₂O₃ + 2H⁺ + 2e^- V₂O₂ + H₂O              - 0,549

V₂O₄ + 2H⁺ + 2e^- V₂O₃ + H₂O              +0,210

V₂O₅ + 6H⁺ + 2e^- 2VO²⁺ + 3H₂O          +0,958

VO₂⁺ + 2H⁺ + e^- VO²⁺ + H₂O                +0,991

VO²⁺ + e^- VO⁺     - 0,044

HV₂O₅^- + 3H⁺ + 2e^- V₂O₃ + 2H₂O         +0,515

2H₂VO₄^- + 3H⁺ + 2e^- HV₂O₅^- + 3H₂O    +0,719

2HVO₄^2- + 5H⁺ + 2e^- HV₂O₅^- + 3H₂O   +1,281

2VO₄^3- + 7H⁺ + 2e^- HV₂O₅^- + 3H₂O      +1,962

H₃V₂O₇^- + 2H⁺ + 2e^- HV₂O₅^- + 2H₂O    +0,501

HV₆O₁₇^3- + 16H₂O + 30e_- 6V + 33OH^-  - 1,154

Zinco

Zn²⁺ + 2e^- Zn       - 0,7628

ZnO + 2H⁺ + 2e^- Zn + H₂O                    - 0,439

Zn(OH)₂ + 2e^- Zn + 2OH^-                      - 1,245

Zn(OH)₄^2- (ZnO₂^2- + 2H₂O) + 2e^- Zn + 4OH^-       - 1,214

ZnO₂^2- + 4H⁺ + 2e^- Zn + 2H₂O              +0,441

HZnO₂^- + 3H⁺ + 2e^- Zn + 2H₂O             +0,054

Zn(OH)₃^- + 2e^- Zn + 2OH^- - 1,183

Zirconio

Zr⁴⁺ + 4e^- Zr        - 1,529

ZrO₂ + 4H⁺ + 4e^- Zr + 2H₂O                 - 1,456

ZrO²⁺ + 4e^- Zr + H₂O                            - 1,570

Zr(OH)₄ + 4H⁺ + 4e^- Zr + 4H₂O - 1,553

ZrO(OH)₂ + 4H⁺ + 4e^- Zr + 3H₂O         - 1,553

H₂ZrO₃ + H₂O + 4e^- Zr + 4OH^-             - 2,361

HZrO₃^- + 5H⁺ + 4e^- Zr + 3H₂O              - 1,276

Zolfo

S + H⁺ + 2e^- HS^- - 0,065

S + 2H⁺ + 2e^- H₂S_(aq)                             +0,142

S + 2e^- S^2-            - 0,4763

SO₄^2- + 8H⁺ + 6e^- S + 4H₂O                  +0,3572

HSO₄^- + 7H⁺ + 6e^- S + 4H₂O                 +0,339

SO₄^2- + 4H⁺ + 2e^- H₂SO₃ + H₂O +0,172

S₂O₆^2- + 2H⁺ + 2e^- 2HSO₃^-                    +0,455

H₂SO₃ + 4H⁺ + 4e^- S + 3H₂O                +0,45

SO₂ + 4H⁺ + 4e^- S + 2H₂O +0,451

S₄O₆^2- + 12 H⁺ + 10e^- 4S + 6H₂O          +0,416

S₂O₃^2- + 6H⁺ + 4e^- 2S + 3H₂O               +0,4643

S₂O₆^2- + 12H⁺ + 10e^- 2S + 6H₂O           +0,472

S₂O₄^2- + 8H⁺ + 6e^- 2S + 4H₂O               +0,6408

S₂O₈^2- + 2e^- 2SO₄^2-                                +2,010

SO₄^2- + 2H⁺ + 2e^- SO₃^2- + H₂O              - 0,09

SO₄^2- + H₂O + 2e^- SO₃^2- + 2OH^- - 0,90

2S + 2e^- S₂^2-         - 0,4284

3S + 2e^- S₃^2-         - 0,3897

4S + 2e^- S₄^2-         - 0,3604

5S + 2e^- S₅^2-         - 0,3403

SO + 2H⁺ + 2e^- S + H₂O                        +1,507

2HSO₃^- + 4H⁺ + 4e^- S₂O₃^2- + 3H₂O +0,491