Standardní redukční elektrodové potenciály při 25°C - elektrody druhého druhu

 

Elektroda

Elektrodová reakce

E° (V)

Ag2CrO4/Ag/CrO42-

Ag2CrO4 + 2 e- Ag + CrO42-

+ 0.464

Ag2O/Ag/OH-

Ag2O +H2O + 2 e- 2 Ag + 2 OH-

+ 0.345

Ag2SO4/Ag/SO42-

Ag2SO4 + 2 e- 2 Ag + SO42-

+ 0.650

Ag2S/Ag/S2-

Ag2S + 2 e- 2 Ag + S2-

- 0.660

AgBr/Ag/Br-

AgBr + e- Ag + Br-

+ 0.071

AgCl/Ag/Cl-

AgCl + e- Ag + Cl-

+ 0.222

AgCN/Ag/CN-

AgCN + e- Ag + CN-

- 0.017

AgIO3/Ag/IO3-

AgIO3 + e- Ag + IO3-

+ 0.354

AgI/Ag/I-

AgI + e- Ag + I-

- 0.152

AgSCN/Ag/SCN-

AgSCN + e- Ag + SCN-

+ 0.095

Al(OH)2/Al/OH-

Al(OH)3 + 3 e- Al + 3 OH-

- 2.300

Ba(OH)2/Ba/OH-

Ba(OH)2 + 2 e- Ba + 2 OH-

- 2.810

Bi2O3/Bi/H+

Bi2O3 + 6 H+ + 6 e- 2 Bi + 3 H2O

+ 0.371

Bi2O3/Bi/OH-

Bi2O3 + 3 H2O + 3 e- 2 Bi + 6OH-

- 0.460

Ca(OH)2/Ca/OH-

Ca(OH)2 + 2 e- Ca + 2 OH-

- 3.020

Cd(OH)2/Cd/OH-

Cd(OH)2 + 2 e- Cd + 2 OH-

- 0.809

CdCO3/Cd/CO32-

CdCO3 + 2 e- Cd + CO32-

- 0.740

CdS/Cd/S2-

CdS + 2 e- Cd + S2-

- 1.175

Co(OH)2/Co/OH-

Co(OH)2 + 2 e- Co + 2 OH-

- 0.730

Cr(OH)3/Cr/OH-

Cr(OH)3 + 3 e- Cr + 3 OH-

- 1.480

Cu2O/Cu/OH-

Cu2O + H2O + 2 e- 2 Cu + 2 OH-

- 0.358

Cu2S/Cu/S2-

Cu2S + 2 e- 2 Cu + S2-

- 0.890

CuCl/Cu/Cl-

CuCl + e- Cu + Cl-

+ 0.137

CuI/Cu/I-

CuI + e- Cu + I-

- 0.185

Fe(OH)2/Fe/OH-

Fe(OH)2 + 2 e- Fe + 2 OH-

- 0.877

FeCO3/Fe/CO32-

FeCO3 + 2 e- Fe + CO32-

- 0.756

FeS/Fe/S2-

FeS + 2 e- Fe + S2-

- 0.950

FeCO3/Fe/CO32-

FeCO3 + 2 e- Fe + CO32-

- 0.756

FeS/Fe/S2-

FeS + 2 e- Fe + S2-

- 0.950

Hg2Br2/Hg/Br-

Hg2Br2 + e- Hg + Br-

+ 0.140

Hg2Cl2/Hg/Cl-

Hg2Cl2 + e- Hg + Cl-

+ 0.268

Hg2I2/Hg/I-

Hg2I2 + e- Hg + I-

- 0.040

Hg2SO4/Hg/SO42-

Hg2SO4 + 2 e- 2 Hg + SO42-

+ 0.615

HgO/Hg/OH-

HgO + H2O + 2 e- Hg + 2 OH-

+ 0.098

HgS/Hg/S2-

HgS + 2 e- Hg + S2-

- 0.690

Mg(OH)2/Mg/OH-

Mg(OH)2 + 2 e- Mg + 2 OH-

- 2.690

Mn(OH)2/Mn/OH-

Mn(OH)2 + 2 e- Mn + 2 OH-

- 1.550

MnCO3/Mn/CO32-

MnCO3 + 2 e- Mn + CO32-

- 1.500

Ni(OH)2/Ni/OH-

Ni(OH)2 + 2 e- Ni + 2 OH-

- 0.720

PbBr2/Pb/Br-

PbBr2 + 2 e- Pb + 2 Br-

- 0.284

PbCl2/Pb/Cl-

PbCl2 + 2 e- Pb + 2 Cl-

- 0.268

PbCO3/Pb/CO32-

PbCO3 + 2 e- Pb + CO32-

- 0.506

PbI2/Pb/I-

PbI2 + 2 e- Pb + 2 I-

- 0.365

PbO/Pb/OH-

PbO + H2O + 2 e- Pb + 2 OH-

- 0.578

PbSO4/Pb/SO-

PbSO4 + 2 e- Pb + SO42-

- 0.359

PbS/Pb/S2-

PbS + 2 e- Pb + S2-

- 0.930

Sb2O3/Sb/H+

Sb2O3 + 6 H+ + 6 e- 2 Sb + 3H2O

+ 0.152

SiO2/Si/H+

SiO2 + 4 H+ + 4 e- Si + 2 H2O

- 0.857

TlCl/Tl/Cl-

TlCl + e- Tl + Cl-

- 0.557

TlI/Tl/I-

TlI + e- Tl + I-

- 0.753

TlOH/Tl/OH-    

TlOH + e- Tl + OH-

- 0.345

Zn(OH)2/Zn/OH-

Zn(OH)2 + 2 e- Zn + 2 OH-

- 1.245

ZnCO3/Zn/CO32-

ZnCO3 + 2 e- Zn + CO32-

- 1.060

ZnS/Zn/S2-

ZnS + 2 e- Zn + S2-

- 1.405