Periodensystem der Elemente
KTF-SPLIT    EniG. 

Glossar
Anhang
PDF Table
Auszeichnungen
Links
Software
My Software

 
  REDAKTEURE:
  English Englisch

  Aditya Vardhan
  Eni Generalic
  Français Französisch

  Michel Ditria
  Hrvatski Kroatisch

  Eni Generalic
  Marija Bralic
  Slobodan Brinic
  Deutch Deutsch

  Marc Hens
  Italiano Italienisch

  redakteure gesucht
Bottom FAKULTÄT DER CHEMISCHEN TECHNOLOGIE o PERIODENSYSTEM DER ELEMENTE Bottom
  A B C D E F G H I J K L M N O P R S T U V X Z  



REDUCTION POTENTIALS



SILVER
Balanced half-reaction Eo / V   Annotation
Ag+ + e- =Ag(s) +0.799  
Ag+ + e- =Ag(s) +0.228  1 mol dm-3 HCl
Ag+ + e- =Ag(s) +0.792  1 mol dm-3 HClO4
Ag+ + e- =Ag(s) +0.77  1 mol dm-3 H2SO4
Ag2+ + e- =Ag+ +1.998  
AgO+ + 2H+ + e- =Ag2+ + H2O +2.016  
2AgO(s) + 2H+ + 2e- =Ag2O + H2O +1.41  
2AgO(s) + H2O + 2e- =Ag2O + OH- +0.599  
Ag2O(s) + 2H+ + 2e- =2Ag(s) + H2O +1.173  
Ag2O(s) + H2O + 2e- =2Ag(s) + 2OH- +0.342  
Ag2CrO4(s) + 2e- =2Ag(s) + CrO42- +0.446  
Ag2S(s) + 2H+ + 2e- =2Ag(s) + H2S(g) - 0.036  
Ag2S(s) + 2e- =2Ag(s) + S2- - 0.712  
AgCl(s) + e- =Ag(s) + Cl- +0.222  
AgCl(s) + e- =Ag(s) + Cl- +0.228  1 mol dm-3 KCl
AgBr(s) + e- =Ag(s) + Br- +0.073  
AgI(s) + e- =Ag(s) + I- - 0.151  
Ag(CN)2- + e- =Ag(s) + 2CN- - 0.31  
Ag(S2O3)23- + e- =Ag(s) + 2S2O32- +0.017  
Top

 
ALUMINIUM

Balanced half-reaction Eo / V   Annotation
Al3+ + 3e- =Al(s) - 1.662  
Al3+ + 2e- =Al+ - 2.76  
Al+ + e- =Al(s) - 0.55  
AlO2- + 4H+ + 3e- =Al(s) + 2H2O - 1.262  
Al(OH)3(s) + 3e- =Al(s) + 3OH- - 2.31  
AlF63- + 3e- =Al(s) + 6F- - 2.07  
Top

 
ARSENIC

Balanced half-reaction Eo / V   Annotation
H3AsO4 + 3H+ + 2e- =AsO+ + 3H2O +0.55  
H3AsO4 + 2H+ + 2e- =H3AsO3 + H2O +0.559  
H3AsO4 + 2H+ + 2e- =H3AsO3 + H2O +0.577  1 mol dm-3 HCl
H3AsO4 + 2H+ + 2e- =H3AsO3 + H2O +0.577  1 mol dm-3 HClO4
H2AsO4- + 3H+ + 2e- =H3AsO3 + H2O +0.666  
HAsO42- + 4H+ + 2e- =H3AsO3 + H2O +0.881  
HAsO42- + 3H+ + 2e- =H2AsO3- + H2O +0.609  
AsO43- + 3H2O + 2e- =H2AsO3- + 4OH- - 0.67  
2H3AsO4 + 4H+ + 4e- =As2O3(s) + 5H2O +0.58  
2H2AsO4- + 6H+ + 4e- =As2O3(s) + 5H2O +0.687  
2HAsO42- + 8H+ + 4e- =As2O3(s) + 5H2O +0.901  
2AsO43- + 10H+ + 4e- =As2O3(s) + 5H2O +1.27  
AsO43- + 8H+ + 5e- =As(s) + 4H2O +0.648  
As2O3(s) + 6H+ + 6e- =2As(s) + 3H2O +0.234  
AsO+ + 2H+ + 3e- =As(s) + H2O +0.254  
H3AsO3 + 3H+ + 3e- =As(s) + 3H2O +0.248  
H2AsO3- + 4H+ + 3e- =As(s) + 3H2O +0.429  
H2AsO3- + H2O + 3e- =As(s) + 4OH- - 0.68  
As(s) + 3H+ + 3e- =AsH3(g) - 0.608  
Top

 
GOLD

Balanced half-reaction Eo / V   Annotation
Au3+ + 2e- =Au+ +1.41  
Au3+ + 3e- =Au(s) +1.50  
Au+ + e- =Au(s) +1.68  
AuCl4- + 2e- =AuCl2- + 2Cl- +0.926  
AuBr4- + 2e- =AuBr2- + 2Br- +0.805  
AuCl4- + 3e- =Au(s) + 4Cl- +1.002  
AuBr4- + 3e- =Au(s) + 4Br- +0.858  
AuCl2- + e- =Au(s) + 2Cl- +1.154  
AuBr2- + e- =Au(s) + 2Br- +0.963  
Top

 
BORON

Balanced half-reaction Eo / V   Annotation
H3BO3 + 3H+ + 3e- =B(s) + 3H2O - 0.869  
H2BO3- + 4H+ + 3e- =B(s) + 3H2O - 0.687  
HBO32- + 5H+ + 3e- =B(s) + 3H2O - 0.437  
BO33- + 6H+ + 3e- =B(s) + 3H2O - 0.165  
B(OH)3 + 3H+ + 3e- =B(s) + 3H2O - 0.87  
BF4- + 3e- =B(s) + 4F- - 1.04  
H2B4O7 + 12H+ + 12e- =4B(s) + 7H2O - 0.836  
B4O72- + 14H+ + 12e- =4B(s) + 7H2O - 0.792  
Top

 
BARIUM

Balanced half-reaction Eo / V   Annotation
Ba2+ + 2e- =Ba(s) - 2.906  
BaO + 2H+ + 2e- =Ba(s) + H2O - 2.166  
Top

 
BERYLLIUM

Balanced half-reaction Eo / V   Annotation
Be2+ + 2e- =Be(s) - 1.85  
Be2O32- + 3H2O + 4e- =2Be(s) + 6OH- - 2.62  
Top

 
BISMUTH

Balanced half-reaction Eo / V   Annotation
Bi3+ + 3e- =Bi(s) +0.215  
BiOH2+ + H+ + 3e- =Bi(s) + H2O +0.254  
BiO+ + 2H+ + 3e- =Bi(s) + H2O +0.320  
BiOCl(s) + 2H+ + 3e- =Bi(s) + H2O + Cl- +0.160  
Bi2O3(s) + 3H2O + 6e- =2Bi(s) + 6OH- - 0.46  
Bi2O5(s) + 10H+ + 4e- =2Bi3+ + 5H2O +1.759  
Bi2O5(s) + 8H+ + 4e- =2BiOH2+ + 3H2O +1.700  
Bi2O5(s) + 6H+ + 4e- =2BiO+ + 3H2O +1.605  
NaBiO3(s) + 4H+ + 2e- =BiO+ + Na+ + H2O +1.80  
BiCl4- + 3e- =Bi(s) + 4Cl- +0.16  
Bi(s) + 3H+ + 3e- =BiH3(g) - 0.800  
Top

 
BROMINE

Balanced half-reaction Eo / V   Annotation
Br2(l) + 2e- =2Br- +1.065  
Br2(aq) + 2e- =2Br- +1.087  
Br3- + 2e- =3Br- +1.05  
HBrO3 + 5H+ + 6e- =Br- + 3H2O +1.42  
3HBrO3 + 15H+ + 16e- =Br3- + 9H2O +1.462  
2BrO3- + 12H+ + 10e- =Br2(l) + 6H2O +1.52  
BrO3- + 6H+ + 6e- =Br- + 3H2O +1.44  
BrO3- + 3H2O + 6e- =Br- + 6OH- +0.61  
2HBrO2 + 10H+ + 10e- =Br2(l) + 6H2O +1.48  
HBrO3 + 4H+ + 4e- =HBrO + 2H2O +1.46  
HBrO3 + 3H+ + 4e- =BrO- + 2H2O +1.33  
2HBrO + 2H+ + 2e- =Br2(l) + 2H2O +1.59  
2BrO- + 4H+ + 2e- =Br2(l) + 2H2O +2.09  
2BrO- + 2H2O + 2e- =Br2(l) + 4OH- +0.45  
BrO- + H2O + 2e- =Br- + 2OH- +0.76  
Top

 
CARBON

Balanced half-reaction Eo / V   Annotation
CO2(g) + 2H+ + 2e- =CO(g) + H2O - 0.12  
2CO2(g) + 2H+ + 2e- =H2C2O4 - 0.49  
CO2(g) + 2H+ + 2e- =HCOOH - 0.20  
CNO- + 2H2O + 2e- =CN- + 2OH- - 0.97  
2HCNO + 2H+ + 2e- =(CN)2(g) + 2H2O +0.33  
(CN)2(g) + 2H+ + 2e- =2HCN +0.37  
C6H4O2 + 2H+ + 2e- =C6H4(OH)2 +0.699  kinon / hidrokinon
C6H4O2 + 2H+ + 2e- =C6H4(OH)2 +0.696  1 mol dm-3 HCl
C6H4O2 + 2H+ + 2e- =C6H4(OH)2 +0.696  1 mol dm-3 HClO4
C6H4O2 + 2H+ + 2e- =C6H4(OH)2 +0.696  1 mol dm-3 H2SO4
Top

 
CALCIUM

Balanced half-reaction Eo / V   Annotation
Ca2+ + 2e- =Ca(s) - 2.866  
CaO + 2H+ + 2e- =Ca(s) + H2O - 1.90  
Ca(OH)2(s) + 2e- =Ca(s) + 2OH- - 3.03  
Top

 
CADMIUM

Balanced half-reaction Eo / V   Annotation
Cd2+ + 2e- =Cd(s) - 0.403  
Cd(CN)42- + 2e- =Cd(s) + 4CN- - 1.09  
Cd(NH3)42+ + 2e- =Cd(s) + 4NH3 - 0.61  
Cd(OH)2(s) + 2e- =Cd(s) + 2OH- - 0.81  
CdS(s) + 2e- =Cd(s) + S2- - 1.17  
Top

 
CERIUM

Balanced half-reaction Eo / V   Annotation
Ce3+ + 3e- =Ce(s) - 2.48  
Ce(OH)22+ + 2H+ + e- =Ce3+ + 2H2O +1.73  
Ce(OH)3+ + H+ + e- =Ce3+ + H2O +1.71  
Ce(ClO4)62- + e- =Ce3+ + 6ClO4- +1.70  1 mol dm-3 HClO4
Ce(NO3)62- + e- =Ce3+ + 6NO3- +1.61  1 mol dm-3 HNO3
Ce(SO4)32- + e- =Ce3+ + 3SO42- +1.44  1 mol dm-3 H2SO4
Top

 
CHLORINE

Balanced half-reaction Eo / V   Annotation
Cl2(g) + 2e- =2Cl- +1.359  
Cl2(aq) + 2e- =2Cl- +1.39  
ClO4- + 2H+ + 2e- =ClO3- + H2O +1.19  
ClO4- + H2O + 2e- =ClO3- + 2OH- +0.36  
2ClO4- + 16H+ + 14e- =Cl2(g) + 8H2O +1.39  
ClO3- + 3H+ + 2e- =HClO2 + H2O +1.21  
ClO3- + H2O + 2e- =ClO2- + 2OH- +0.33  
2ClO3- + 12H+ + 10e- =Cl2(g) + 3H2O +1.47  
HClO2 + 2H+ + 2e- =HClO + H2O +1.64  
ClO2- + H2O + 2e- =ClO- + 2OH- +0.66  
2HClO + 2H+ + 2e- =Cl2(g) + H2O +1.63  
2ClO- + 2H2O + 2e- =Cl2(g) + 4OH- +0.40  
Top

 
COBALT

Balanced half-reaction Eo / V   Annotation
Co3+ + e- =Co2+ +1.808  
Co2+ + 2e- =Co(s) - 0.277  
Co3O4(s) + 8H+ + 2e- =3Co2+ + 4H2O +2.11  
Co2O3(s) + 6H+ + 2e- =2Co2+ + 3H2O +1.75  
Co(OH)2(s) + 2e- =Co(s) + 2OH- - 0.73  
Co(NH3)63+ + e- =Co(NH3)62+ +0.1  
CoO(OH)(s) + H2O + e- =Co(OH)2(s) + OH- +0.17  
Top

 
CHROMIUM

Balanced half-reaction Eo / V   Annotation
Cr3+ + e- =Cr2+ - 0.408  
Cr3+ + 3e- =Cr(s) - 0.744  
Cr2+ + 2e- =Cr(s) - 0.91  
Cr2O72- + 14H+ + 6e- =2Cr3+ + 7H2O +1.33  
Cr2O72- + 12H+ + 6e- =2CrOH2+ + 5H2O +1.26  
Cr2O72- + 10H+ + 6e- =2Cr(OH)2+ + 3H2O +1.14  
Cr2O72- + 14H+ + 12e- =2Cr(s) + 7H2O +0.29  
HCrO4- + 7H+ + 3e- =Cr3+ + 4H2O +1.20  
CrO42- + 4H2O + 3e- =Cr(OH)3(s) + 5OH- - 0.13  
HCrO4- + 6H+ + 3e- =CrOH2+ + 3H2O +1.28  
CrO42- + 7H+ + 3e- =CrOH2+ + 3H2O +1.40  
CrO42- + 6H+ + 3e- =Cr(OH)2+ + 2H2O +1.28  
CrO42- + 4H+ + 3e- =CrO2- + 2H2O +0.95  
CrO42- + 2H+ + 3e- =CrO33- + H2O +0.36  
Top

 
CAESIUM

Balanced half-reaction Eo / V   Annotation
Cs+ + e- =Cs(s) - 2.91  
Top

 
COPPER

Balanced half-reaction Eo / V   Annotation
Cu2+ + 2e- =Cu(s) +0.337  
Cu2+ + e- =Cu+ +0.153  
Cu+ + e- =Cu(s) +0.521  
HCuO2- + 3H+ + e- =Cu+ + 2H2O +1.73  
CuO22- + 4H+ + e- =Cu+ + 2H2O +2.51  
HCuO2- + 3H+ + 2e- =Cu(s) + 2H2O +1.13  
CuO22- + 4H+ + 2e- =Cu(s) + 2H2O +1.52  
2Cu2+ + H2O + 2e- =Cu2O(s) + 2H+ +0.20  
2HCuO2- + 4H+ + 2e- =Cu2O(s) + 3H2O +1.78  
2CuO22- + 6H+ + 2e- =Cu2O(s) + 3H2O +2.56  
CuO + 2H+ + e- =Cu+ + H2O +0.62  
Cu2+ + Br- + e- =CuBr(s) +0.64  
Cu2+ + Cl- + e- =CuCl(s) +0.54  
Cu2+ + I- + e- =CuI(s) +0.86  
CuI(s) + e- =Cu(s) + I- - 0.185  
Cu(NH3)42+ + e- =Cu(NH3)2+ + 2NH3 - 0.01  
Cu(NH3)2+ + e- =Cu(s) + 2NH3 - 0.12  
Cu(NH3)42+ + 2e- =Cu(s) + 4NH3 - 0.07  
Top

 
FLUORINE

Balanced half-reaction Eo / V   Annotation
F2(g) + 2e- =2F- +2.87  
F2(g) + 2H+ + 2e- =2HF +2.81  
F2(g) + 2H+ + 2e- =2HF(aq) +3.06  
F2O + 4H+ + 4e- =2HF + H2O +2.12  
F2O + 2H+ + 4e- =2F- + H2O +2.15  
F2O + 2H+ + 2e- =F2(g) + H2O +1.44  
Top

 
IRON

Balanced half-reaction Eo / V   Annotation
Fe3+ + 3e- =Fe(s) - 0.04  
Fe3+ + e- =Fe2+ +0.771  
Fe3+ + e- =Fe2+ +0.700  1 mol dm-3 HCl
Fe3+ + e- =Fe2+ +0.732  1 mol dm-3 HClO4
Fe3+ + e- =Fe2+ +0.68  1 mol dm-3 H2SO4
Fe2+ + 2e- =Fe(s) - 0.440  
FeOH2+ + H+ + e- =Fe2+ + H2O +0.91  
Fe(OH)2+ + 2H+ + e- =Fe2+ + 2H2O +1.19  
FeO42- + 8H+ + 3e- =Fe3+ + 4H2O +1.70  
FeO42- + 7H+ + 3e- =FeOH2+ + 3H2O +1.65  
FeO42- + 6H+ + 3e- =Fe(OH)2+ + 2H2O +1.56  
FeO42- + 5H+ + 3e- =HFeO2 + 2H2O +1.00  
HFeO2- + 3H+ + 2e- =Fe(s) + 2H2O +0.49  
Fe(CN)63- + e- =Fe(CN)64- +0.36  
Fe(CN)63- + e- =Fe(CN)64- +0.71  1 mol dm-3 HCl
Fe(CN)63- + e- =Fe(CN)64- +0.72  1 mol dm-3 HClO4
Fe(CN)63- + e- =Fe(CN)64- +0.72  1 mol dm-3 H2SO4
Fe(C12H8N2)33+ + e- =Fe(C12H8N2)32+ +1.06  
Top

 
GALLIUM

Balanced half-reaction Eo / V   Annotation
Ga3+ + 2e- =Ga+ - 0.4  
Ga3+ + 3e- =Ga(s) - 0.56  
H2GaO3- + 3e- =Ga(s) + 4OH- - 1.22  
Top

 
GERMANIUM

Balanced half-reaction Eo / V   Annotation
Ge2+ + 2e- =Ge(s) +0.00  
GeO2(s) + 4H+ + 2e- =Ge2+ + 2H2O - 0.25  
GeO2(s) + 4H+ + 4e- =Ge + 2H2O - 0.01  
H2GeO3 + 4H+ + 4e- =Ge(s) + 3H2O - 0.13  
GeO(s) + 2H+ + 2e- =Ge(s) + H2O - 0.29  
Top

 
HYDROGEN

Balanced half-reaction Eo / V   Annotation
2H+ + 2e- =H2(g) s0.000  
2H+ + 2e- =H2(g) - 0.41  [H+] = 10-7 mol dm-3
2H+ + 2e- =H2(g) - 0.005  1 mol dm-3 HCl
2H+ + 2e- =H2(g) - 0.005  1 mol dm-3 HClO4
2H2O + 2e- =H2(g) + 2OH- - 0.83  
H2O2 + 2H+ + 2e- =2H2O +1.77  
HO2- + H2O + 2e- =3OH- +0.88  
H2(g) + 2e- =2H- - 2.25  
Top

 
HAFNIUM

Balanced half-reaction Eo / V   Annotation
Hf4+ + 4e- =Hf(s) - 1.70  
HfO2(s) + 4H+ + 4e- =Hf(s) + 2H2O - 1.57  
HfO2+ + 2H+ + 4e- =Hf(s) + H2O - 1.70  
HfO(OH)2(s) + H2O + 4e- =Hf(s) + 4OH- - 2.50  
Top

 
MERCURY

Balanced half-reaction Eo / V   Annotation
Hg2+ + 2e- =Hg(l) +0.854  
2Hg2+ + 2e- =Hg22+ +0.920  
2Hg2+ + 2e- =Hg22+ +0.907  1 mol dm-3 HClO4
Hg22+ + 2e- =2Hg(l) +0.788  
Hg22+ + 2e- =2Hg(l) +0.274  1 mol dm-3 HCl
Hg22+ + 2e- =2Hg(l) +0.776  1 mol dm-3 HClO4
Hg22+ + 2e- =2Hg(l) +0.674  1 mol dm-3 H2SO4
HgO(s) + H2O + 2e- =Hg(l) + 2OH- +0.10  
HgO(s) + 2H+ + 2e- =Hg(l) + H2O +0.93  
2Hg(OH)2(s) + 4H+ + 2e- =Hg22+ + 4H2O +1.28  
Hg2Cl2(s) + 2e- =2Hg(l) + 2Cl- +0.268  
Hg2Cl2(s) + 2e- =2Hg(l) + 2Cl- +0.244  Saturated KCl
Hg2Cl2(s) + 2e- =2Hg(l) + 2Cl- +0.282  1 mol dm-3 KCl
Hg2Cl2(s) + 2e- =2Hg(l) + 2Cl- +0.334  0.1 mol dm-3 KCl
Hg2Br2(s) + 2e- =2Hg(l) + 2Br- +0.14  
Hg2I2(s) + 2e- =2Hg(l) + 2I- - 0.04  
Hg2C2O4(s) + 2e- =2Hg(l) + C2O42- +0.42  
Hg2SO4(s) + 2e- =2Hg(l) + SO42- +0.615  
HgS(s) (black) + 2e- =Hg(l) + S2- - 0.67  
HgS(s) (red) + 2e- =Hg + S2- - 0.70  
Hg(CN)42- + 2e- =Hg(l) + 4CN- - 0.37  
Top

 
IODINE

Balanced half-reaction Eo / V   Annotation
I2(s) + 2e- =2I- +0.535  
I2(aq) + 2e- =2I- +0.615  
3I2 + 2e- =2I3- +0.789  
I3- + 2e- =3I- +0.536  
H5IO6 + H+ + 2e- =IO3- + 3H2O +1.601  
HIO52- + 3H+ + 2e- =IO3- + 2H2O +1.898  
HIO52- + 8H+ + 6e- =HIO + 4H2O +1.389  
2HIO52- + 18H+ + 14e- =I2(s) + 10H2O +1.384  
3HIO52- + 27H+ + 22e- =I3- + 15H2O +1.357  
HIO52- + 9H+ + 8e- =I- + 5H2O +1.288  
HIO4 + 2H+ + 2e- =HIO3 + H2O +1.626  
IO4- + 2H+ + 2e- =IO3- + H2O +1.653  
HIO4 + 6H+ + 6e- =HIO + 3H2O +1.290  
IO4- + 7H+ + 6e- =HIO + 3H2O +1.235  
2HIO4 + 14H+ + 14e- =I2(s) + 8H2O +1.300  
3HIO4 + 21H+ + 22e- =I3- + 12H2O +1.276  
HIO4 + 7H+ + 8e- =I- + 4H2O +1.215  
IO3- + 6H+ + 4e- =I+ + 3H2O +1.155  
IO3- + 4H+ + 4e- =IO- + 2H2O +0.972  
2IO3- + 12H+ + 10e- =I2(s) + 6H2O +1.196  
2IO3- + 12H+ + 10e- =I2(aq) + 6H2O +1.178  
IO3- + 2Cl- + 6H+ + 4e- =ICl2- + 3H2O +1.24  
2HIO3 + 10H+ + 10e- =I2(s) + 6H2O +1.169  
3HIO3 + 15H+ + 16e- =I3- + 9H2O +1.145  
HIO3 + 5H+ + 6e- =I- + 3H2O +1.078  
2HIO + 2H+ + 2e- =I2(s) + 2H2O +1.354  
2IO- + 4H+ + 2e- =I2(s) + 2H2O +2.005  
3HIO + 3H+ + 4e- =I3- + 3H2O +1.213  
3IO- + 6H+ + 4e- =I3- + 3H2O +1.701  
IO- + 2H+ + 2e- =I- + H2O +1.313  
HIO + H+ + 2e- =I- + H2O +0.987  
2ICl3(s) + 6e- =I2(s) + 6Cl- +1.28  
2ICl(s) + 2e- =I2(s) + 2Cl- +1.22  
2ICl + 2e- =I2(s) + 2Cl- +1.19  
2ICl2- + 2e- =I2(s) + 4Cl- +1.056  
2IBr(aq) + 2e- =I2(s) + 2Br- +1.02  
Top

 
INDIUM

Balanced half-reaction Eo / V   Annotation
In3+ + 2e- =In+ - 0.404  
In3+ + 3e- =In(s) - 0.345  
In(OH)3 + 3e- =In(s) + 3OH- - 1.0  
Top

 
IRIDIUM

Balanced half-reaction Eo / V   Annotation
Ir3+ + 3e- =Ir(s) +1.15  
IrCl62- + e- =IrCl63- +1.026  
IrCl62- + 4e- =Ir(s) + 6Cl- +0.835  
IrCl63- + 3e- =Ir(s) + 6Cl- +0.77  
IrO2(s) + 4H+ + 4e- =Ir(s) + H2O +0.93  
IrO2(s) + 2H2O + 4e- =Ir(s) + 4OH- +0.1  
Ir2O3 + 3H2O + 6e- =2Ir(s) + 6OH- +0.1  
Top

 
POTASSIUM

Balanced half-reaction Eo / V   Annotation
K+ + e- =K(s) - 2.925  
Top

 
LANTHANUM

Balanced half-reaction Eo / V   Annotation
La3+ + 3e- =La(s) - 2.52  
La(OH)3(s) + 3e- =La(s) + 3OH- - 2.90  
Top

 
LITHIUM

Balanced half-reaction Eo / V   Annotation
Li+ + e- =Li(s) - 3.045  
Top

 
MAGNESIUM

Balanced half-reaction Eo / V   Annotation
Mg2+ + 2e- =Mg(s) - 2.363  
Mg(OH)2(s) + 2e- =Mg(s) + 2OH- - 2.69  
MgO(s) + 2H+ + 2e- =Mg(s) + H2O - 1.722  
Top

 
MANGANESE

Balanced half-reaction Eo / V   Annotation
MnIV + e- =MnIII +1.65  14 mol dm-3 H2SO4
MnIII + e- =MnII +1.59  14 mol dm-3 H2SO4
Mn3+ + e- =Mn2+ +1.51  7.5 mol dm-3 H2SO4
Mn2+ + 2e- =Mn(s) - 1.180  
MnO4- + e- =MnO42- +0.564  
MnO4- + 2H2O + 3e- =MnO2(s) + 4OH- +0.588  
MnO4- + 4H+ + 3e- =MnO2(s) (alpha) + 2H2O +1.695  
MnO4- + 4H+ + 3e- =MnO2(s) (beta) + 2H2O +1.679  
MnO4- + 8H+ + 4e- =Mn3+ + 4H2O +1.506  
MnO4- + 8H+ + 5e- =Mn2+ + 4H2O +1.51  
MnO42- + 4H+ + 2e- =MnO2(s) + 2H2O +2.257  
MnO42- + 5H+ + 2e- =HMnO2- + 2H2O +1.234  
MnO42- + 2H2O + 2e- =MnO2(s) + 4OH- +0.51  18 °C
MnO2(s) + 4H+ + e- =Mn3+ + 2H2O +0.948  
MnO2(s) (alpha) + 4H+ + 2e- =Mn2+ + 2H2O +1.23  
MnO2(s) (beta) + 4H+ + 2e- =Mn2+ + 2H2O +1.22  
MnO2(s) (gamma) + 4H+ + 2e- =Mn2+ + 2H2O +0.21  
Mn(OH)3(s) + e- =Mn(OH)2(s) + 2OH- +0.1  
Mn(CN)63- + e- =Mn(CN)64- - 0.244  
Mn(OH)2(s) + 2e- =Mn(s) + 2OH- - 1.55  
HMnO2- + 3H+ + 2e- =Mn(s) + 2H2O - 0.163  
Top

 
MOLYBDENUM

Balanced half-reaction Eo / V   Annotation
MoVI + e- =MoV +0.43  4.6 mol dm-3 H2SO4
MoIII + 3e- =Mo(s) - 0.2  
H2MoO4(aq) + 2H+ + e- =MoO2+ + 2H2O +0.4  
HMoO4- + 3H+ + 2e- =MoO2 + 2H2O +0.429  
MoO42- + 4H+ + 2e- =MoO2 + 2H2O +0.606  
HMoO4- + 7H+ + 3e- =Mo3+ + 4H2O +0.390  
MoO42- + 8H+ + 3e- =Mo3+ + 4H2O +0.508  
MoO42- + 8H+ + 6e- =Mo(s) + 4H2O +0.154  
MoO42- + 4H2O + 6e- =Mo(s) + 8OH- - 1.05  
Top

 
NITROGEN

Balanced half-reaction Eo / V   Annotation
N2(g) + 6H+ + 6e- =2NH3(g) +0.057  
N2(g) + 2H2O + 6H+ + 6e- =2NH×H2O +0.092  
N2(g) + 8H+ + 6e- =2NH4+ +0.275  
N2(g) + 5H+ + 4e- =N2H5+ - 0.23  
NO3- + 2H+ + e- =NO2(g) + H2O +0.775  
2NO3- + 4H+ + 2e- =N2O4(g) + 2H2O +0.80  
NO3- + 3H+ + 2e- =HNO2 + H2O +0.94  
NO3- + 3H+ + 2e- =HNO2 + H2O +0.92  1 mol dm-3 HNO3
NO3- + 2H+ + 2e- =NO2- + H2O +0.835  
NO3- + 4H+ + 3e- =NO(g) + H2O +0.96  
NO2(g) + e- =NO2- +0.893  
NO2(g) + H+ + e- =HNO2 +1.093  
NO2(g) + 2H+ + 2e- =NO(g) + H2O +1.049  
2NO2(g) + 6H+ + 6e- =N2O(g) + 3H2O +1.229  
2NO2(g) + 8H+ + 8e- =N2(g) + 4H2O +1.363  
NO2- + 2H+ + e- =NO(g) + H2O +1.202  
HNO2 + H+ + e- =NO(g) + H2O +1.00  
2NO2- + 6H+ + 4e- =N2O(g) + 3H2O +1.396  
2HNO2 + 4H+ + 4e- =N2O(g) + 3H2O +1.297  
2NO2- + 8H+ + 6e- =N2(g) + 4H2O +1.520  
2HNO2 + 6H+ + 6e- =N2(g) + 4H2O +1.454  
NO2- + 7H+ + 6e- =NH3(g) + 2H2O +0.789  
NO2- + 7H+ + 6e- =NH×H2O + H2O +0.806  
HNO2 + 7H+ + 6e- =NH4+ + 2H2O +0.864  
2NO(g) + 2H+ + 2e- =N2O(g) + H2O +1.591  
2NO(g) + 4H+ + 4e- =N2(g) + 2H2O +1.678  
NO(g) + 5H+ + 5e- =NH×H2O +0.727  
NO(g) + 6H+ + 5e- =NH4+ + H2O +0.836  
N2O(g) + 2H+ + 2e- =N2(g) + H2O +1.766  
N2O(g) + H2O + 8H+ + 8e- =2NH×H2O +0.510  
N2O(g) + 10H+ + 8e- =2NH4+ + H2O +0.647  
N3- + 7H2O + 6e- =N2H4 + NH3(g) + 7OH- - 0.62  
Top

 
SODIUM

Balanced half-reaction Eo / V   Annotation
Na+ + e- =Na(s) - 2.714  
Top

 
NIOBIUM

Balanced half-reaction Eo / V   Annotation
NbV + 2e- =NbIII - 0.373  6 mol dm-3 H2SO4
Nb3+ + 3e- =Nb(s) - 1.1  
Nb2O5(s) + 10H+ + 10e- =2Nb(s) + 5H2O - 0.65  
NbO3+ + 2H+ + 2e- =Nb3+ + H2O - 0.343  
NbO(SO4)2- + 2H+ + 2e- =Nb3+ + H2O + 2SO42- - 0.1  
NbO(SO4)2- + 2H+ + 5e- =Nb(s) + H2O + 2SO42- - 0.63  
Top

 
NICKEL

Balanced half-reaction Eo / V   Annotation
Ni2+ + 2e- =Ni(s) - 0.250  
NiO2(s) + 4H+ + 2e- =Ni2+ + 2H2O +1.593  
NiO2(s) + 2H2O + 2e- =Ni(OH)2(s) + 2OH- +0.49  
Ni2O3(s) + 6H+ + 2e- =2Ni2+ + 3H2O +1.753  
Ni3O4(s) + 2H2O + 2e- =3HNiO2- + H+ - 0.718  
Ni3O4(s) + 8H+ + 2e- =3Ni2+ + 4H2O +1.977  
HNiO2- + 3H+ + 2e- =Ni(s) + 2H2O +0.648  
Ni(CN)42- + e- =Ni(CN)3- + CN- - 0.4  
NiO42- + 8H+ + 4e- =Ni2+ + 4H2O +1.8  
Ni(NH3)62+ + 2e- =Ni(s) + 6NH3 - 0.49  
NiS(s) (alpha) + 2e- =Ni(s) + S2- +0.76  
NiS(s) (gamma) + 2e- =Ni(s) + S2- - 0.99  
Top

 
OXYGEN

Balanced half-reaction Eo / V   Annotation
O2(g) + 4H+ + 4e- =2H2O +1.229  
O2(g) + 4H+ + 4e- =2H2O +0.815  [H+] = 10-7 mol dm-3
O2(g) + 2H2O + 4e- =4OH- +0.401  
O2(g) + H2O + 2e- =HO2- + OH- +0.076  
O2(g) + 2H+ + 2e- =H2O2 +0.682  
O3(g) + 2H+ + 2e- =O2(g) + H2O +2.07  
O3(g) + 6H+ + 6e- =3H2O +1.501  
O3(g) + H2O + 2e- =O2(g) + 2OH- +1.24  
HO2- + H2O + 2e- =3OH- +0.88  
H2O2 + 2H+ + 2e- =2H2O +1.776  
Top

 
OSMIUM

Balanced half-reaction Eo / V   Annotation
Os2+ + 2e- =Os(s) +0.85  1 mol dm-3 HCl
OsO2(s) + 2H2O + 4e- =Os(s) + 4OH- - 0.15  
OsO4(s) + 8H+ + 8e- =Os(s) + 4H2O +0.85  
OsO4(s) + 8H+ + 6Cl- + 4e- =OsCl62- + 4H2O +1.0  
HOsO5- + 2e- =OsO42- + OH- +0.3  
OsO42- + 2H2O + 2e- =OsO2(s) + 4OH- +0.1  
OsCl62- + e- =OsCl63- +0.85  
OsCl63- + e- =Os2+ + 6Cl- +0.4  
OsCl63- + 3e- =Os(s) + 6Cl- +0.71  
Top

 
PHOSPHORUS

Balanced half-reaction Eo / V   Annotation
PO43- + 3H+ + 2e- =HPO32- + H2O +0.121  
HPO42- + 2H+ + 2e- =HPO32- + H2O - 0.234  
H2PO4- + H+ + 2e- =HPO32- + H2O - 0.447  
H2PO4- + 2H+ + 2e- =H2PO3- + H2O - 0.260  
H3PO4 + H+ + 2e- =H2PO3- + H2O - 0.329  
H3PO4 + 2H+ + 2e- =H3PO3 + H2O - 0.276  
PO43- + 8H+ + 5e- =P (red) + 4H2O - 0.128  
PO43- + 8H+ + 5e- =P (white) + 4H2O - 0.156  
HPO42- + 7H+ + 5e- =P (red) + 4H2O - 0.288  
HPO42- + 7H+ + 5e- =P (white) + 4H2O - 0.316  
H2PO4- + 6H+ + 5e- =P (red) + 4H2O - 0.358  
H2PO4- + 6H+ + 5e- =P (white) + 4H2O - 0.386  
H3PO4 + 5H+ + 5e- =P (red) + 4H2O - 0.383  
H3PO4 + 5H+ + 5e- =P (white) + 4H2O - 0.411  
PO43- + 11H+ + 8e- =PH3(g) + 4H2O - 0.123  
HPO42- + 10H+ + 8e- =PH3(g) + 4H2O - 0.212  
H2PO4- + 9H+ + 8e- =PH3(g) + 4H2O - 0.265  
H3PO4 + 8H+ + 8e- =PH3(g) + 4H2O - 0.281  
H3PO3 + 2H+ + 2e- =H3PO2 + H2O - 0.499  
HPO32- + 5H+ + 3e- =P (red) + 3H2O - 0.298  
HPO32- + 5H+ + 3e- =P (white) + 3H2O - 0.346  
H2PO3- + 4H+ + 3e- =P (red) + 3H2O - 0.419  
H2PO3- + 4H+ + 3e- =P (white) + 3H2O - 0.467  
H3PO3 + 3H+ + 3e- =P (red) + 3H2O - 0.454  
H3PO3 + 3H+ + 3e- =P (white) + 3H2O - 0.502  
H4P2O6 + 2H+ + 2e- =2H3PO3 +0.38  
2H3PO4 + 2H+ + 2e- =H4P2O6 + 2H2O - 0.94  
P (red) + 3H+ + 3e- =PH3(g) - 0.111  
P (white) + 3H+ + 3e- =PH3(g) - 0.063  
Top

 
LEAD

Balanced half-reaction Eo / V   Annotation
Pb4+ + 2e- =Pb2+ +1.694  
Pb2+ + 2e- =Pb(s) - 0.126  
Pb2+ + 2e- =Pb(s) - 0.14  1 mol dm-3 HClO4
Pb2+ + 2e- =Pb(s) - 0.29  1 mol dm-3 H2SO4
3PbO2(s) + 2H2O + 4e- =Pb3O4(s) + 4OH- +0.295  
PbO2(s) + 4H+ + 2e- =Pb2+ + 2H2O +1.455  
PbO2(s) + 4H+ + SO42- + 2e- =PbSO4(s) + 2H2O +1.685  
PbO2(s) + H+ + 2e- =HPbO2- +0.621  
3PbO32- + 10H+ + 4e- =Pb3O4(s) + 5H2O +2.515  
PbO32- + 4H+ + 2e- =PbO(s) + 2H2O +2.001  
PbO32- + 3H+ + e- =HPbO2- + H2O +1.547  
PbO32- + 6H+ + 2e- =Pb2+ + 3H2O +2.375  
Pb3O4(s) + H2O + 2e- =3PbO(s) + 2OH- +0.249  
Pb3O4(s) + 8H+ + 2e- =3Pb2+ + 3H2O +2.094  
Pb3O4(s) + 2H2O + 2e- =3HPbO2- + H+ - 0.390  
PbO(s) + 2H+ + 2e- =Pb(s) + H2O +0.249  
PbSO4 + 2e- =Pb(s) + SO42- - 0.350  
HPbO2- + 3H+ + 2e- =Pb(s) + 2H2O +0.702  
Pb(s) + 2H+ + 2e- =PbH2 - 1.507  
Top

 
PALLADIUM

Balanced half-reaction Eo / V   Annotation
Pd2+ + 2e- =Pd(s) +0.987  
PdO3(s) + 2H+ + 2e- =PdO2(s) + H2O +1.22  18 °C
PdO2(s) + 2H+ + 2e- =PdO(s) + H2O +0.95  18 °C
PdO2 (s)+ H2O + 2e- =PdO(s) + 2OH- +0.73  
PdO2(s) + 4H+ + 2e- =Pd2+ + 2H2O +1.194  
PdCl62- + 2e- =PdCl42- + 2Cl- +1.288  1 mol dm-3 HCl
PdCl62- + 4e- =Pd(s) + 6Cl- +0.96  
PdBr62- + 2e- =PdBr42- + 2Br- +0.994  1 mol dm-3 KBr
Pd(OH)4(s) + 2e- =Pd(OH)2(s) + 2OH- +0.73  
Pd(OH)2(s) + 2e- =Pd(s) + 2OH- +0.07  
Top

 
PLATINUM

Balanced half-reaction Eo / V   Annotation
Pt2+ + 2e- =Pt(s) +1.2  
PtO2(s) + 2H+ + 2e- =Pt(OH)2(s) +1.1  
Pt(OH)2(s) + 2e- =Pt(s) + 2OH- +0.15  
Pt(OH)2(s) + 2H+ + 2e- =Pt(s) + 2H2O +0.98  
PtCl62- + 2e- =PtCl42- + 2Cl- +0.68  
PtCl42- + 2e- =Pt(s) + 4Cl- +0.73  
Top

 
PLUTONIUM

Balanced half-reaction Eo / V   Annotation
Pu4+ + e- =Pu3+ +0.970  
Pu3+ + 3e- =Pu(s) - 2.03  
PuO22+ + 4H+ + 2e- =Pu4+ + 2H2O +1.04  
PuO22+ + e- =PuO2+ +0.916  
Pu(OH)3(s) + 3e- =Pu(s) + 3OH- - 2.42  
Pu(OH)4(s) + e- =Pu(OH)3(s) + OH- - 0.95  
Top

 
RADIUM

Balanced half-reaction Eo / V   Annotation
Ra2+ + 2e- =Ra(s) - 2.92  
Top

 
RUBIDIUM

Balanced half-reaction Eo / V   Annotation
Rb+ + e- =Rb(s) - 2.93  
Top

 
RHENIUM

Balanced half-reaction Eo / V   Annotation
Re3+ +3e- =Re(s) +0.3  
ReO2(s) + 4H+ + 4e- =Re(s) + 2H2O +0.26  
ReO4- + 8H+ + 7e- =Re(s) + 4H2O +0.37  
ReO4- + 4H2O + 7e- =Re(s) + 8OH- - 0.584  
ReO4- + 4H+ + 3e- =ReO2(s) + 2H2O +0.51  
ReO4- + 2H2O + 3e- =ReO2(s) + 4OH- - 0.595  
ReO4- + 2H+ + e- =ReO3(s) + 2H2O +0.77  
Top

 
RHODIUM

Balanced half-reaction Eo / V   Annotation
Rh3+ + 3e- =Rh(s) +0.8  
RhCl63- + 3e- =Rh(s) + 6Cl- +0.44  
Rh2O3(s) + 6H+ + 6e- =2Rh(s) + 3H2O +0.87  
RhO2 + 4H+ + 6Cl- + e- =RhCl63- + 2H2O +1.4  
RhO2+ + 2H+ + e- =Rh3+ + H2O +1.40  
RhO42- + 6H+ + 2e- =RhO2+ + 3H2O +1.46  
Top

 
RUTHENIUM

Balanced half-reaction Eo / V   Annotation
Ru2+ + 2e- =Ru(s) +0.45  
RuO2(s) + 4H+ + 4e- =Ru(s) + 2H2O +0.79  
RuO4(s) + e- =RuO4- +1.00  
RuO4- + e- =RuO42- +0.59  
RuCl5- + 2e- =Ru2+ + 5Cl- +0.3  
RuCl3 + 3e- =Ru(s) + 3Cl- +0.68  
Top

 
SULPHUR

Balanced half-reaction Eo / V   Annotation
S(s) + 2e- =S2- - 0.476  
S(s) + H+ + 2e- =HS- - 0.065  
S(s) + 2H+ + 2e- =H2S(g) +0.141  
SO42- + 4H+ + 2e- =H2SO3 + H2O +0.172  
SO42- + 4H2O + 2e- =SO3- + 2OH- - 0.93  
SO42- + 8H+ + 6e- =S(s) + 4H2O +0.357  
HSO4- + 7H+ + 6e- =S(s) + 4H2O +0.339  
SO42- + 8H+ + 8e- =S2- + 4H2O +0.149  
SO42- + 9H+ + 8e- =HS- + 4H2O +0.252  
SO42- + 10H+ + 8e- =H2S(g) + 4H2O +0.303  
HSO4- + 9H+ + 8e- =H2S(g) + 4H2O +0.289  
S2O82- + 2e- =2SO42- +2.01  
S2O82- + 2H+ + 2e- =2HSO4- +2.123  
S4O62- + 2e- =2S2O32- +0.08  
S4O62- + 12H+ + 10e- =4S(s) + 6H2O +0.416  
S2O62- + 2e- =2SO32- +0.026  
SO2(g) + 4H+ + 4e- =S(s) + 2H2O +0.451  
H2SO3 + 4H+ + 4e- =S(s) + 3H2O +0.450  
2SO32- + 6H+ + 4e- =S2O32- + 3H2O +0.705  
2HSO3- + 4H+ + 4e- =S2O32- + 3H2O +0.491  
4HSO3- + 8H+ + 6e- =S4O62- + 6H2O +0.581  
4H2SO3 + 4H+ + 6e- =S4O62- + 6H2O +0.509  
SO32- + 6H+ + 6e- =S2- + 3H2O +0.231  
S22- + 2H+ + 2e- =2HS- +0.298  
S22- + 2e- =2S2- - 0.524  
S32- + 3H+ + 4e- =3HS- +0.097  
S42- + 4H+ + 6e- =4HS- +0.033  
S52- + 5H+ + 8e- =5HS- +0.003  
Top

 
ANTIMONY

Balanced half-reaction Eo / V   Annotation
SbV + 2e- =SbIII +0.818  6 mol dm-3 HCl
SbV + 2e- =SbIII +0.746  3.5 mol dm-3 HCl
SbO+ + 2H+ + 3e- =Sb(s) + H2O +0.212  
SbO3- + 2H+ + 2e- =SbO2- + H2O +0.353  
SbO3- + 3H+ + 2e- =HSbO2 + H2O +0.678  
SbO3- + 4H+ + 2e- =SbO+ + 2H2O +0.704  
SbO2- + 2H+ + 2e- =SbO- + H2O +0.720  
2SbO3- + 6H+ + 4e- =Sb2O3(s) + 3H2O +0.772  
SbO2- + 4H+ + 3e- =Sb(s) + 2H2O +0.446  
HSbO2 + 3H+ + 3e- =Sb(s) + 2H2O +0.230  
Sb2O3(s) + 6H+ + 6e- =2Sb(s) + 3H2O +0.152  
Sb2O5(s) + 6H+ + 4e- =2SbO+ + 3 H2O +0.581  
Sb2O5(s) + 4H+ + 4e- =Sb2O3(s) + 2H2O +0.692  
Sb(s) + 3H+ + 3e- =SbH3(g) - 0.510  
Top

 
SCANDIUM

Balanced half-reaction Eo / V   Annotation
Sc3+ + 3e- =Sc(s) - 2.08  
Top

 
SELENIUM

Balanced half-reaction Eo / V   Annotation
SeO42- + 2H+ + 2e- =SeO32- + H2O +0.880  
SeO42- + H2O + 2e- =SeO32- + 2OH- +0.05  
SeO42- + 3H+ + 2e- =HSeO3- + H2O +1.075  
SeO42- + 4H+ + 2e- =H2SeO3 + H2O +1.15  
HSeO4- + 3H+ + 2e- =H2SeO3 + H2O +1.090  
SeO32- + 6H+ + 4e- =Se(s) + 3H2O +0.875  
HSeO3- + 5H+ + 4e- =Se(s) + 3H2O +0.778  
H2SeO3 + 4H+ + 4e- =Se(s) + 3H2O +0.740  
SeO32- + 6H+ + 6e- =Se2- + 3H2O +0.276  
SeO32- + 7H+ + 6e- =HSe- + 3H2O +0.414  
HSeO3- + 6H+ + 6e- =HSe- + 3H2O +0.349  
HSeO3- + 7H+ + 6e- =H2Se(g) + 3H2O +0.386  
H2SeO3 + 6H+ + 6e- =H2Se(g) + 3H2O +0.360  
Se(s) + 2H+ + 2e- =H2Se(g) - 0.369  
Se(s) + 2e- =Se2- - 0.924  
Se(s) + H+ + 2e- =HSe- - 0.510  
Se(s) + 2H+ + 2e- =H2Se(g) - 0.399  
Top

 
SILICON

Balanced half-reaction Eo / V   Annotation
SiO2(s) + 4H+ + 4e- =Si(s) + 2H2O - 0.86  
SiO32- + 6H+ + 4e- =Si(s) + 3H2O - 0.455  
HSiO3- + 5H+ + 4e- =Si(s) + 3H2O - 0.632  
H2SiO3 + 4H+ + 4e- =Si(s) + 3H2O - 0.780  
SiO2(s) + 8H+ + 8e- =SiH4(g) + 2H2O - 0.377  
SiO32- + 10H+ + 8e- =SiH4(g) + 3H2O - 0.176  
HSiO3- + 9H+ + 8e- =SiH4(g) + 3H2O - 0.265  
H2SiO3 + 8H+ + 8e- =SiH4(g) + 3H2O - 0.339  
Si(s) + 4H+ + 4e- =SiH4(g) +0.102  
SiF62- + 4e- =Si(s) + 6F- - 1.2  
Top

 
TIN

Balanced half-reaction Eo / V   Annotation
Sn4+ + 2e- =Sn2+ +0.154  
Sn4+ + 2e- =Sn2+ +0.14  1 moldm-3 HCl
Sn4+ + 4e- =Sn(s) +0.01  
Sn2+ + 2e- =Sn(s) - 0.136  
Sn2+ + 2e- =Sn(s) - 0.16  1 moldm-3 HClO4
SnO32- + 3H+ + 2e- =HSnO2- + H2O +0.374  
SnO32- + 6H+ + 2e- =Sn2+ + 3H2O +0.844  
HSnO2- + 3H+ + 2e- =Sn(s) + 2H2O +0.333  
Sn(s) + 4H+ + 4e- =SnH4(g) - 1.074  
Top

 
STRONTIUM

Balanced half-reaction Eo / V   Annotation
Sr2+ + 2e- =Sr(s) - 2.89  
Top

 
TANTALUM

Balanced half-reaction Eo / V   Annotation
Ta2O5 + 10H+ + 10e- =2Ta(s) + 5H2O - 0.81  
Top

 
TELLURIUM

Balanced half-reaction Eo / V   Annotation
Te4+ + 4e- =Te(s) +0.568  
Te4+ + 2H+ + 6e- =H2Te(g) +0.132  
TeO42- + 4H+ + 2e- =TeO2(s) + 2H2O +1.509  
HTeO4- + 3H+ + 2e- =TeO2(s) + 2H2O +1.202  
H2TeO4 + 2H+ + 2e- =TeO2(s) + 2H2O +1.020  
TeO42- + 2H+ + 2e- =TeO32- + H2O +0.892  
HTeO4- + H+ + 2e- =TeO32- + H2O +0.584  
HTeO4- + 2H+ + 2e- =HTeO3- + H2O +0.813  
H2TeO4 + H+ + 2e- =HTeO3- + H2O +0.631  
H2TeO4 + 3H+ + 2e- =HTeO2+ + 2H2O +0.953  
H2TeO4 + 6H+ + 2e- =Te4+ + 4H2O +0.920  
Te(OH)6(s) + 2H+ + 2e- =TeO2(s) + 4H2O +1.02  
TeO32- + 6H+ + 4e- =Te(s) + 3H2O +0.827  
HTeO3- + 5H+ + 4e- =Te(s) + 3H2O +0.713  
HTeO2+ + 3H+ + 4e- =Te(s) + 2H2O +0.551  
TeO2+ + 5H+ + 6e- =H2Te(g) + 2H2O +0.121  
Te(s) + 2H+ + 2e- =H2Te(g) - 0.739  
Te(s) + 2e- =Te2- - 1.14  
Top

 
THORIUM

Balanced half-reaction Eo / V   Annotation
Th4+ + 4e- =Th(s) - 1.90  
Th(OH)4(s) + 4e- =Th(s) + 4OH- - 2.48  
Top

 
TITANIUM

Balanced half-reaction Eo / V   Annotation
TiIV + e- =TiIII - 0.092  1 moldm3 HCl
TiIV + 4e- =Ti(s) - 0.88  1 moldm3 HCl
Ti3+ + e- =Ti2+ - 0.369  
Ti2+ + 2e- =Ti(s) - 1.630  
TiO22+ + H+ + 4e- =HTiO2- +1.303  
TiO22+ + 2H+ + 2e- =TiO2+ + H2O +1.800  
TiO2(s) + 4H+ + e- =Ti3+ + H2O - 0.666  
TiO2(s) + 4H+ + 2e- =Ti2+ + H2O - 0.502  
TiO2+ + 2H+ + e- =Ti3+ + H2O +0.099  
TiO2+ + 2H+ + e- =Ti3+ + H2O +0.04  1 moldm3 H2SO4
TiO2+ + 2H+ + 2e- =Ti2+ + H2O - 0.135  
HTiO2- + 5H+ + 2e- =Ti2+ + 3H2O +0.362  
TiF62- + 4e- =Ti(s) + 6F- - 1.19  
Top

 
THALLIUM

Balanced half-reaction Eo / V   Annotation
Tl3+ + 2e- =Tl+ +1.25  
Tl+ + e- =Tl(s) - 0.336  
Tl2O3 + 3H2O + 4e- =2Tl+ + 6OH- +0.02  
TlOH + e- =Tl(s) + OH- - 0.344  
TlCl(s) + e- =Tl(s) + Cl- - 0.557  
TlBr(s) + e- =Tl(s) + Br- - 0.657  
TlI(s) + e- =Tl(s) + I- - 0.766  
Top

 
URANIUM

Balanced half-reaction Eo / V   Annotation
U4+ + e- =U3+ - 0.607  
U3+ + 3e- =U(s) - 1.798  
UO22+ + e- =UO2+ +0.052  
UO22+ + 3H+ + 2e- =UOH3+ + H2O +0.299  
UO22+ + 4H+ + 2e- =U4+ + 2H2O +0.334  
UO22+ + 2e- =UO2(s) +0.45  
UO2+ + 3H+ + e- =UOH3+ + H2O +0.546  
UO2+ + 4H+ + e- =U4+ + 2H2O +0.612  
UOH3+ + H+ + e- =U3+ + H2O - 0.538  
UO2(s) + 4H+ + 4e- =U(s) + 2H2O - 1.444  
UO2(s) + 2H2O + 4e- =U(s) + 4OH- - 2.39  
U3O8(s) + 4H+ + 4e- =3UO2 + 2H2O +0.260  
U(OH)3(s) + 3e- =U(s) + 3OH- - 2.17  
Top

 
VANADIUM

Balanced half-reaction Eo / V   Annotation
V3+ + e- =V2+ - 0.256  
V3+ + e- =V2+ - 0.21  1 moldm3 HClO4
V2+ + 2e- =V(s) - 1.18  
2VO43- + 10H+ + 4e- =V2O3 + 5H2O +1.238  
VO43- + 6H+ + 2e- =VO+ + 3H2O +1.256  
VO2+ + 2H+ + e- =VO2+ + H2O +1.00  
V2O5 + 6H+ + 2e- =2VO2+ + 3H2O +0.998  
V2O4 + 4H+ + 2e- =2VO+ + 2H2O +0.246  
VO2+ + 2H+ + e- =V3+ + H2O +0.359  
VO2+ + H+ + e- =VOH2+ +0.164  
VO2+ + e- =VO+ - 0.044  
V2O3 + 6H+ + 2e- =2V2+ + 3H2O +0.161  
VO+ + 2H+ + e- =V2+ + H2O +0.126  
VOH2+ + H+ + e- =V2+ + H2O - 0.082  
V(OH)4+ + 2H+ + e- =VO2+ + 3H2O +1.00  
V(OH)4+ + 2H+ + e- =VO2+ + 3H2O +1.02  1 moldm3 HCl
V(OH)4+ + 2H+ + e- =VO2+ + 3H2O +1.02  1 moldm3 HClO4
Top

 
TUNGSTEN

Balanced half-reaction Eo / V   Annotation
2WO3(s) + 2H+ + 2e- =W2O5(s) + H2O - 0.029  
WO3(s) + 6H+ + 6e- =W(s) + 3H2O - 0.09  
2WO42- + 6H+ + 2e- =W2O5(s) + 3H2O +0.801  
WO42- + 4H+ + e- =WO2(s) + 2H2O +0.386  
WO42- + 8H+ + 6e- =W(s) + 4H2O +0.049  
W2O5(s) + 2H+ + 2e- =2WO2(s) + H2O - 0.031  
WO2(s) + 4H+ + 4e- =W(s) + 2H2O - 0.12  
W(CN)83- + e- =W(CN)84- +0.457  
Top

 
ZINC

Balanced half-reaction Eo / V   Annotation
Zn2+ + 2e- =Zn(s) - 0.763  
ZnO22- + 4H+ + 2e- =Zn(s) + 2H2O +0.441  
HZnO2- + 3H+ + 2e- =Zn(s) + 2H2O - 0.054  
ZnO22- + 2H2O + 2e- =Zn(s) + 4OH- - 1.216  
Zn(OH)2(s) + 2e- =Zn(s) + 2OH- - 1.245  
ZnS(s) + 2e- =Zn(s) + S2- - 1.40  
Zn(NH3)42+ + 2e- =Zn(s) + 4NH3 - 1.04  
Zn(CN)42+ + 2e- =Zn(s) + 4CN- - 1.26  
Top

 
ZIRCONIUM

Balanced half-reaction Eo / V   Annotation
Zr4+ + 4e- =Zr(s) - 1.539  
H2ZrO3(s) + H2O + 4e- =Zr(s) + 4OH- - 2.36  
HZrO3- + 5H+ + 4e- =Zr(s) + 3H2O - 1.276  
ZrO2+ + 2H+ + 4e- =Zr(s) + H2O - 1.570  
ZrO2(s) + 4H+ + 4e- =Zr(s) + 2H2O - 1.456  
ZrO2×H2O(s) + 4H+ + 4e- =Zr(s) + 3H2O - 1.533  
ZrO2×2H2O + 4H+ + 4e- =Zr(s) + 4H2O - 1.553  

 

Literaturquellen sind auf der literaturseite zu finden bibliographic page.
Bei kommentaren, vorschlägen oder korrekturen, bitte eine e-mail.

Top FAKULTÄT DER CHEMISCHEN TECHNOLOGIE IN SPLIT Eni Generalic PERIODENSYSTEM DER ELEMENTE version 1.6 Top
Glossar chemischer begriffe Periodensystem der Elemente Berechnet die molmasse
Letzte Änderung: 01.02.2002
Copyright © 1998-2002 by Eni Generalic