Celdas voltaicas

Media reacción | Eo (V) |
Li+(aq) + e− → Li(s) | −3.05 |
Rb+(aq) + e− → Rb(s) | −2.98 |
K+(aq) + e− → K(s) | −2.93 |
Cs+(aq) + e− → Cs(s) | −2.92 |
Ba2+(aq) + 2e− → Ba(s) | −2.91 |
Sr2+(aq) + 2e− → Sr(s) | −2.89 |
Ca2+(aq) + 2e− → Ca(s) | −2.76 |
Na+(aq) + e− → Na(s) | −2.71 |
Mg2+(aq) + 2e− → Mg(s) | −2.38 |
H2 + 2e− → 2H− | −2.25 |
Be2+(aq) + 2e− → Be(s) | −1.85 |Al3+(aq) + 3e− → Al(s) | −1.68 |
Ti2+(aq) + 2e− → Ti(s) | −1.63 |
TiO(s) + 2H+ + 2e− → Ti(s) + H2O | −1.31 |
Ti2O3(s) + 2H+ + 2e− → 2TiO(s) + H2O | −1.23 |
Ti3+(aq) + 3e− → Ti(s) | −1.21 |
Mn2+(aq) + 2e− → Mn(s) | −1.18 |
V2+(aq) + 2e− → V(s) | −1.13 |
Sn(s) + 4H+ + 4e− → SnH4(g) | −1.07 |
SiO2(s) + 4H+ + 4e− → Si(s) + 2H2O | −0.91 |
B(OH)3(aq) + 3H+ + 3e− → B(s) + 3H2O | −0.89 |TiO2+(aq) + 2H+ + 4e− → Ti(s) + H2O | −0.86 |
2 H2O(l) + 2e– → H2(g) + 2 OH–(aq) | −0.83 |
Zn2+(aq) + 2e− → Zn(s) | −0.76 |
Cr3+(aq) + 3e− → Cr(s) | −0.74 |
Au(CN)2–(aq) + e– → Au(s) +2 CN–(aq) | −0.60 |
2TiO2(s) + 2H+ + 2e− → Ti2O3(s) + H2O | −0.56 |
Ga3+(aq) + 3e− → Ga(s) | −0.53 |
H3PO2(aq) + H+ + e− → P(s) + 2H2O | −0.51 |
H3PO3(aq) + 3H+ + 3e− → P(s) + 3H2O | −0.50 |
H3PO3(aq)+ 2H+ + 2e− → H3PO2(aq) + H2O | −0.50 |
Fe2+(aq) + 2e− → Fe(s) | −0.44 |
2CO2(g) + 2H+(aq) + 2e– → HOOCCOOH(aq) | −0.43 |
Cr3+(aq) + e− → Cr2+(aq) | −0.42 |
2H+ + 2e− → H2 | −0.41 |
Cd2+(aq) + 2e− → Cd(s) | −0.40 |
PbSO4(s) + 2e– → Pb(s) +SO42-(aq) | −0.36 |
GeO2(s) + 2H+ + 2e− → GeO(s) + H2O | −0.37 |
In3+(aq) + 3e− → In(s) | −0.34 |
Tl+(aq) + e− → Tl(s) | −0.34 |
Ge(s) +4H+ + 4e− → GeH4(g) | −0.29 |
Co2+(aq) + 2e → Co(s) | −0.28 |
H3PO4(aq) + 2H+ + 2e− → H3PO3(aq) + H2O | −0.28 |
V3+(aq) + e− → V2+(aq) | −0.26 |
Ni2+(aq) + 2e− → Ni(s) | −0.25 |
As(s) + 3H+ + 3e− → AsH3(g) | −0.23 |
MoO2(s) + 4H+ + 4e− → Mo(s) + 2H2O | −0.15 |
Si(s) + 4H+ + 4e− → SiH4(g) | −0.14 |
Sn2+(aq) + 2e− → Sn(s) | −0.13 |
O2(g) + H+ + e− → HO2•(aq) | −0.13 |
Pb2+(aq) + 2e− →Pb(s) | −0.13 |
WO2(s) + 4H+ + 4e− → W(s) | −0.12 |
CO2(g) + 2H+ + 2e− → HCOOH(aq) | −0.11 |
Se(s) + 2H+ + 2e− → H2Se(g) | −0.11 |
CO2(g) + 2H+ + 2e− → CO(g) + H2O | −0.11 |
SnO(s) + 2H+ + 2e− → Sn(s) + H2O | −0.10 |
SnO2(s) + 2H+ + 2e− → SnO(s) + H2O | −0.09 |
WO3(aq) + 6H+ + 6e− → W(s) | −0.09 |
P(s) + 3H+ + 3e− → PH3(g) | −0.06 |
HCOOH(aq) + 2H+ + 2e− → HCHO(aq) + H2O | −0.03|
2H+(aq) + 2e− → H2(g) | 0 |
H2MoO4(aq) + 6H+ + 6e− → Mo(s) + 4H2O | 0.11 |
Ge4+(aq) + 4e− → Ge(s) | 0.12 |
C(s) + 4H+ + 4e− → CH4(g) | 0.13 |
HCHO(aq) + 2H+ + 2e− → CH3OH(aq) | 0.13 |
S(s) + 2H+ + 2e− → H2S(g) | 0.14 |
Sn4+(aq) + 2e− → Sn2+(aq) | 0.15 |
Cu2+(aq) + e− → Cu+(aq) | 0.16 |
HSO4−(aq) + 3H+ + 2e− → 2H2O(l) + SO2(aq) | 0.16 |
SO42−(aq) + 4H+ + 2e− → 2H2O(l) +SO2(aq) | 0.17 |
SbO+ + 2H+ + 3e− → Sb(s) + H2O | 0.2 |
H3AsO3(aq) + 3H+ + 3e− → As(s) + 3H2O | 0.24 |
GeO(s) + 2H+ + 2e− → Ge(s) + H2O | 0.26 |
Bi3+(aq) + 3e− → Bi(s) | 0.32 |
VO2+(aq) + 2H+ + e− → V3+(aq) | 0.34 |
Cu2+(aq) + 2e− → Cu(s) | 0.34 |
[Fe(CN)6]3−(aq) + e− → [Fe(CN)6]4−(aq) | 0.36 |
O2(g) + 2H2O(l) + 4e– → 4OH–(aq) | 0.4 |
H2MoO4 + 6H+ + 3e− → Mo3+(aq) | 0.43 |
CH3OH(aq)+ 2H+ + 2e− → CH4(g) + H2O | 0.5 |
SO2(aq) + 4H+ + 4e− → S(s) + 2H2O | 0.5 |
Cu+(aq) + e− → Cu(s) | 0.52 |
CO(g) + 2H+ + 2e− → C(s) + H2O | 0.52 |
I2(s) + 2e− → 2I−(aq) | 0.54 |
I3−(aq) + 2e− → 3I−(aq) | 0.54 |
[AuI4]−(aq) + 3e− → Au(s) + 4I−(aq) | 0.56 |
H3AsO4(aq) + 2H+ + 2e− → H3AsO3(aq) + H2O | 0.56 |
[AuI2]−(aq) + e− → Au(s) + 2I−(aq) | 0.58 |
MnO4–(aq) + 2H2O(l) + 3e– →MnO2(s) + 4 OH–(aq) | 0.59 |
S2O32− + 6H+ + 4e− → 2S(s) + 3H2O | 0.6 |
H2MoO4(aq) + 2H+ + 2e− → MoO2(s) + 2H2O | 0.65 |
O2(g) + 2H+ + 2e− → H2O2(aq) | 0.7 |
Tl3+(aq) + 3e− → Tl(s) | 0.72 |
H2SeO3(aq) + 4H+ + 4e− → Se(s) + 3H2O | 0.74 |
Fe3+(aq) + e− → Fe2+(aq) | 0.77 |
Hg22+(aq) + 2e− → 2Hg(l) | 0.8 |
Ag+(aq) + e− → Ag(s) | 0.8 |
NO3–(aq) + 2H+(aq) +e– → NO2(g) + H2O(l) | 0.8 |...