Potentiels d'électrode standard (demi-cellule)
- Page ID
- 193980
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| Demi-réaction | E° (V) |
|---|---|
| \(\ce{Ag+ + e- ⟶Ag}\) | +0,7996 |
| \(\ce{AgCl + e- ⟶Ag + Cl-}\) | +0,22233 |
| \(\ce{[Ag(CN)2]- + e- ⟶Ag + 2CN-}\) | −0,31 |
| \(\ce{Ag2CrO4 + 2e- ⟶2Ag + CrO4^2-}\) | +0,45 |
| \(\ce{[Ag(NH3)2]+ + e- ⟶Ag + 2NH3}\) | +0,373 |
| \(\ce{[Ag(S2O3)2]^3+ + e- ⟶Ag + 2S2O3^2-}\) | +0,017 |
| \(\ce{[AlF6]^3- + 3e- ⟶Al + 6F-}\) | −2,07 |
| \(\ce{Al^3+ + 3e- ⟶Al}\) | −1,662 |
| \(\ce{Am^3+ + 3e- ⟶Am}\) | −2 048 |
| \(\ce{Au^3+ + 3e- ⟶Au}\) | +1 498 |
| \(\ce{Au+ + e- ⟶Au}\) | +1,692 |
| \(\ce{Ba^2+ + 2e- ⟶Ba}\) | −2,912 |
| \(\ce{Be^2+ + 2e- ⟶Be}\) | −1,847 |
| \(\ce{Br2}(aq) + \ce{2e-} ⟶\ce{2Br-}\) | +1,0873 |
| \(\ce{Ca^2+ + 2e- ⟶Ca}\) | −2,868 |
| \(\ce{Ce^3 + 3e- ⟶Ce}\) | −2,483 |
| \(\ce{Ce^4+ + e- ⟶Ce^3+}\) | +1,61 |
| \(\ce{Cd^2+ + 2e- ⟶Cd}\) | −0,4030 |
| \(\ce{[Cd(CN)4]^2- + 2e- ⟶Cd + 4CN-}\) | −1,09 |
| \(\ce{[Cd(NH3)4]^2+ + 2e- ⟶Cd + 4NH3}\) | −0,61 |
| \(\ce{CdS + 2e- ⟶Cd + S^2-}\) | −1,17 |
| \(\ce{Cl2 + 2e- ⟶2Cl-}\) | +1 35827 |
| \(\ce{ClO4- + H2O + 2e- ⟶ClO3- + 2OH-}\) | +0,36 |
| \(\ce{ClO3- + H2O + 2e- ⟶ClO2- + 2OH-}\) | +0,33 |
| \(\ce{ClO2- + H2O + 2e- ⟶ClO- + 2OH-}\) | +0,66 |
| \(\ce{ClO- + H2O + 2e- ⟶Cl- + 2OH-}\) | +0,89 |
| \(\ce{ClO4- + 2H3O+ + 2e- ⟶ClO3- + 3H2O}\) | +1 189 |
| \(\ce{ClO3- + 3H3O+ + 2e- ⟶HClO2 + 4H2O}\) | +1,21 |
| \(\ce{HClO + H3O+ + 2e- ⟶Cl- + 2H2O}\) | +1 482 |
| \(\ce{HClO + H3O+ + e- ⟶\dfrac{1}{2}Cl2 + 2H2O}\) | +1,611 |
| \(\ce{HClO2 + 2H3O+ + 2e- ⟶HClO + 3H2O}\) | +1,628 |
| \(\ce{Co^3+ + e- ⟶Co^2+ \:(2\:mol\,//\,H2SO4)}\) | +1,83 |
| \(\ce{Co^2+ + 2e- ⟶Co}\) | −0,28 |
| \(\ce{[Co(NH3)6]^3+ + e- ⟶[Co(NH3)6]^2+}\) | +0,1 |
| \(\ce{Co(OH)3 + e- ⟶Co(OH)2 + OH-}\) | +0,17 |
| \(\ce{Cr^3 + 3e- ⟶Cr}\) | −0,744 |
| \(\ce{Cr^3+ + e- ⟶Cr^2+}\) | −0,407 |
| \(\ce{Cr^2+ + 2e- ⟶Cr}\) | −0,913 |
| \(\ce{[Cu(CN)2]- + e- ⟶Cu + 2CN-}\) | −0,43 |
| \(\ce{CrO4^2- + 4H2O + 3e- ⟶ Cr(OH)3 + 5OH-}\) | −0,13 |
| \(\ce{Cr2O7^2- + 14H3O+ + 6e- ⟶2Cr^3+ + 21H2O}\) | +1 232 |
| \(\ce{[Cr(OH)4]- + 3e- ⟶Cr + 4OH-}\) | −1,2 |
| \(\ce{Cr(OH)3 + 3e- ⟶Cr + 3OH-}\) | −1,48 |
| \(\ce{Cu^2+ + e- ⟶Cu+}\) | +0,153 |
| \(\ce{Cu^2+ + 2e- ⟶Cu}\) | +0,34 |
| \(\ce{Cu+ + e- ⟶Cu}\) | +0,521 |
| \(\ce{F2 + 2e- ⟶2F-}\) | +2 866 |
| \(\ce{Fe^2+ + 2e- ⟶Fe}\) | −0,447 |
| \(\ce{Fe^3+ + e- ⟶Fe^2+}\) | +0,771 |
| \(\ce{[Fe(CN)6]^3- + e- ⟶[Fe(CN)6]^4-}\) | +0,36 |
| \(\ce{Fe(OH)2 + 2e- ⟶Fe + 2OH-}\) | −0,88 |
| \(\ce{FeS + 2e- ⟶Fe + S^2-}\) | −1,01 |
| \(\ce{Ga^3+ + 3e- ⟶Ga}\) | −0,549 |
| \(\ce{Gd^3+ + 3e- ⟶Gd}\) | −2,279 |
| \(\ce{\dfrac{1}{2}H2 + e- ⟶H- }\) | −2,23 |
| \(\ce{2H2O + 2e- ⟶H2 + 2OH-}\) | −0,827 |
| \(\ce{H2O2 + 2H3O+ + 2e- ⟶4H2O}\) | +1,776 |
| \(\ce{2H3O+ + 2e- ⟶H2 + 2H2O}\) | 0,00 |
| \(\ce{HO2- + H2O + 2e- ⟶3OH-}\) | +0,878 |
| \(\ce{Hf^4+ + 4e- ⟶Hf}\) | −1,55 |
| \(\ce{Hg^2+ + 2e- ⟶Hg}\) | +0,851 |
| \(\ce{2Hg^2+ + 2e- ⟶Hg2^2+}\) | +0,92 |
| \(\ce{Hg2^2+ + 2e- ⟶2Hg}\) | +0,7973 |
| \(\ce{[HgBr4]^2- + 2e- ⟶Hg + 4Br-}\) | +0,21 |
| \(\ce{Hg2Cl2 + 2e- ⟶2Hg + 2Cl-}\) | +0,26808 |
| \(\ce{[Hg(CN)4]^2- + 2e- ⟶Hg + 4CN-}\) | −0,37 |
| \(\ce{[HgI4]^2- + 2e- ⟶Hg + 4I-}\) | −0,04 |
| \(\ce{HgS + 2e- ⟶Hg + S^2-}\) | −0,70 |
| \(\ce{I2 + 2e- ⟶2I-}\) | +0,5355 |
| \(\ce{In^3+ + 3e- ⟶In}\) | −0,3382 |
| \(\ce{K+ + e- ⟶K}\) | −2,931 |
| \(\ce{La^3+ + 3e- ⟶La}\) | −2,52 |
| \(\ce{Li+ + e- ⟶Li}\) | −3,04 |
| \(\ce{Lu^3+ + 3e- ⟶Lu}\) | −2,28 |
| \(\ce{Mg^2+ + 2e- ⟶Mg}\) | −2,372 |
| \(\ce{Mn^2+ + 2e- ⟶Mn}\) | −1,185 |
| \(\ce{MnO2 + 2H2O + 2e- ⟶Mn(OH)2 + 2OH-}\) | −0,05 |
| \(\ce{MnO4- + 2H2O + 3e- ⟶MnO2 + 4OH-}\) | +0,558 |
| \(\ce{MnO2 + 4H+ + 2e- ⟶Mn^2+ + 2H2O}\) | +1,23 |
| \(\ce{MnO4- + 8H+ + 5e- ⟶Mn^2+ + 4H2O}\) | +1,507 |
| \(\ce{Na+ + e- ⟶Na}\) | −2,71 |
| \(\ce{Nd^3+ + 3e- ⟶Nd}\) | −2,323 |
| \(\ce{Ni^2+ + 2e- ⟶Ni}\) | −0,257 |
| \(\ce{[Ni(NH3)6]^2+ + 2e- ⟶Ni + 6NH3}\) | −0,49 |
| \(\ce{NiO2 + 4H+ + 2e- ⟶Ni^2+ + 2H2O}\) | +1,593 |
| \(\ce{NiO2 + 2H2O + 2e- ⟶Ni(OH)2 + 2OH-}\) | +0,49 |
| \(\ce{NiS + 2e- ⟶Ni + S^2-}\) | +0,76 |
| \(\ce{NO3- + 4H+ + 3e- ⟶NO + 2H2O}\) | +0,957 |
| \(\ce{NO3- + 3H+ + 2e- ⟶HNO2 + H2O}\) | +0,92 |
| \(\ce{NO3- + H2O + 2e- ⟶NO2- + 2OH-}\) | +0,10 |
| \(\ce{Np^3+ + 3e- ⟶Np}\) | −1,856 |
| \(\ce{O2 + 2H2O + 4e- ⟶4OH-}\) | +0,401 |
| \(\ce{O2 + 2H+ + 2e- ⟶H2O2}\) | +0,695 |
| \(\ce{O2 + 4H+ + 4e- ⟶2H2O}\) | +1,229 |
| \(\ce{Pb^2+ + 2e- ⟶Pb}\) | −0,1262 |
| \(\ce{PbO2 + SO4^2- + 4H+ + 2e- ⟶PbSO4 + 2H2O}\) | +1,69 |
| \(\ce{PbS + 2e- ⟶Pb + S^2-}\) | −0,95 |
| \(\ce{PbSO4 + 2e- ⟶Pb + SO4^2-}\) | −0,3505 |
| \(\ce{Pd^2+ + 2e- ⟶Pd}\) | +0,987 |
| \(\ce{[PdCl4]^2- + 2e- ⟶Pd + 4Cl-}\) | +0,591 |
| \(\ce{Pt^2+ + 2e- ⟶Pt}\) | +1,20 |
| \(\ce{[PtBr4]^2- + 2e- ⟶Pt + 4Br-}\) | +0,58 |
| \(\ce{[PtCl4]^2- + 2e- ⟶Pt + 4Cl-}\) | +0,755 |
| \(\ce{[PtCl6]^2- + 2e- ⟶[PtCl4]^2- + 2Cl-}\) | +0,68 |
| \(\ce{Pu^3 + 3e- ⟶Pu}\) | −2,03 |
| \(\ce{Ra^2+ + 2e- ⟶Ra}\) | −2,92 |
| \(\ce{Rb+ + e- ⟶Rb}\) | −2,98 |
| \(\ce{[RhCl6]^3- + 3e- ⟶Rh + 6Cl-}\) | +0,44 |
| \(\ce{S + 2e- ⟶S^2-}\) | −0,47 627 |
| \(\ce{S + 2H+ + 2e- ⟶H2S}\) | +0,142 |
| \(\ce{Sc^3+ + 3e- ⟶Sc}\) | −2,09 |
| \(\ce{Se + 2H+ + 2e- ⟶H2Se}\) | −0,399 |
| \(\ce{[SiF6]^2- + 4e- ⟶Si + 6F-}\) | −1,2 |
| \(\ce{SiO3^2- + 3H2O + 4e- ⟶Si + 6OH-}\) | −1,697 |
| \(\ce{SiO2 + 4H+ + 4e- ⟶Si + 2H2O}\) | −0,86 |
| \(\ce{Sm^3+ + 3e- ⟶Sm}\) | −2,304 |
| \(\ce{Sn^4+ + 2e- ⟶Sn^2+}\) | +0,151 |
| \(\ce{Sn^2+ + 2e- ⟶Sn}\) | −0,1375 |
| \(\ce{[SnF6]^2- + 4e- ⟶Sn + 6F-}\) | −0,25 |
| \(\ce{SnS + 2e- ⟶Sn + S^2-}\) | −0,94 |
| \(\ce{Sr^2+ + 2e- ⟶Sr}\) | −2,89 |
| \(\ce{TeO2 + 4H+ + 4e- ⟶Te + 2H2O}\) | +0,593 |
| \(\ce{Th^4+ + 4e- ⟶Th}\) | −1,90 |
| \(\ce{Ti^2+ + 2e- ⟶Ti}\) | −1,630 |
| \(\ce{U^3+ + 3e- ⟶U}\) | −1,79 |
| \(\ce{V^2+ + 2e- ⟶V}\) | −1,19 |
| \(\ce{Y^3+ + 3e- ⟶Y}\) | −2,37 |
| \(\ce{Zn^2+ + 2e- ⟶Zn}\) | −0,7618 |
| \(\ce{[Zn(CN)4]^2- + 2e- ⟶Zn + 4CN-}\) | −1,26 |
| \(\ce{[Zn(NH3)4]^2+ + 2e- ⟶Zn + 4NH3}\) | −1,04 |
| \(\ce{Zn(OH)2 + 2e- ⟶Zn + 2OH-}\) | −1 245 |
| \(\ce{[Zn(OH)4]^2 + 2e- ⟶Zn + 4OH-}\) | −1,19 |
| \(\ce{ZnS + 2e- ⟶Zn + S^2-}\) | −1,40 |
| \(\ce{Zr^4 + 4e- ⟶Zr}\) | −1,539 |