Potenciais de eletrodo padrão (meia célula)
- Page ID
- 185062
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Meia-reação | 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 |
\(\ce{Al^3+ + 3e- ⟶Al}\) | −1,62 |
\(\ce{Am^3+ + 3e- ⟶Am}\) | −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 |
\(\ce{Cr^3 + 3e- ⟶Cr}\) | −0,74 |
\(\ce{Cr^3+ + e- ⟶Cr^2+}\) | −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 |
\(\ce{2H2O + 2e- ⟶H2 + 2OH-}\) | −0,8277 |
\(\ce{H2O2 + 2H3O+ + 2e- ⟶4H2O}\) | +1.776 |
\(\ce{2H3O+ + 2e- ⟶H2 + 2H2O}\) | 0,00 |
\(\ce{HO2- + H2O + 2e- ⟶3OH-}\) | +0,878 |
\(\ce{Hf^4+ + 4e- ⟶Hf}\) | −1,5 |
\(\ce{Hg^2+ + 2e- ⟶Hg}\) | +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 |
\(\ce{In^3+ + 3e- ⟶In}\) | −0,382 |
\(\ce{K+ + e- ⟶K}\) | −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 |
\(\ce{S + 2e- ⟶S^2-}\) | −0,47627 |
\(\ce{S + 2H+ + 2e- ⟶H2S}\) | +0,142 |
\(\ce{Sc^3+ + 3e- ⟶Sc}\) | −2,09 |
\(\ce{Se + 2H+ + 2e- ⟶H2Se}\) | −0,39 |
\(\ce{[SiF6]^2- + 4e- ⟶Si + 6F-}\) | −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 |