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Elektrochemische Spannungsreihe



Die elektrochemische Spannungsreihe [auch: Elektrochemische Potentialskala oder Redoxreihe (für Metalle)] listet Redoxpaare nach ihren Standardelektrodenpotentialen E0 (Normalpotentiale) auf.

Eine separate Übersicht über die Normalpotentiale der Lanthanoide befindet sich unter Seltenerdmetalle.

 

Tabelle: Elektrochemische Spannungsreihe

Für die aufgeführten Werte der Redoxreihe gelten unter folgenden Bedingungen:

- Bezugselektrode: Normal-Wasserstoffelektrode,

- Temperatur: 25 °C bzw. 298,15 K,

- effektive Konzentration c = 1 mol l-1 bzw. Ionenaktivität = 1,

- für gasförmige Reaktionen gilt ein Partialdruck von 101,325 kPa (1 atm, 1,01325 bar),

- Nox = Oxidationsstufe.

 

Hinweis: Nach einem Element suchen mit <STRG + F> oder der entsprechenden Suchfunktion des Browsers!

 

E0 (V)SymbolNoxName Ox.
Name Red.
Ox.
Red.
e-
-3,10Pr+ III
+ II
Praseodym(III)-Kation
Praseodym(II)-Kation
Pr3+
⇄ Pr2+
+ e-
-3,09N0
- III
Stickstoff
Stickstoffwasserstoffsäure
3/2 N2 (g) + H+
⇄ HN3 (g)
+ e-
-3,0401Li+ I
0
Lithium-Kation
Lithium
Li +
⇄ Li (s)
+ e-
-3,04N0
- I
Stickstoff
Hydroxylamin
N2 (g) + 4 H2
⇄ 2 NH2OH + 2 OH-
+ 2 e-
-3,026Cs+ I
0
Cäsium-Kation
Cäsium
Cs+
⇄ Cs
+ e-
-2,98Rb+ I
0
Rubidium-Kation
Rubidium
Rb+
⇄ Rb (s)
+ e-
-2,931K+ I
0
Kalium-Kation
Kalium
K+
⇄ K (s)
+ e-
-2,912Ba+ II
0
Barium-Kation
Barium
Ba2+
⇄ Ba (s)
+ 2 e-
-2,90La+ III
0
Lanthanhydroxid
Lanthan
La(OH)3
⇄ La (s) + 3 OH-
+ 3 e-
-2,899Sr+ II
0
Strontium-Kation
Strontium
Sr2+
⇄ Sr (s)
+ 2 e-
-2,868Ca+ II
0
Calcium-Kation
Calcium
Ca2+
⇄ Ca (s)
+ 2 e-
-2,812Eu+ II
0
Europium(II)-Kation
Europium
Eu2+
⇄ Eu (s)
+ 2 e-
-2,80Ho+ III
+ II
Holmium(III)-Kation
Holmium(II)-Kation
Ho3+
⇄ Ho2+
+ 1 e-
-2,80Ra+ II
0
Radium-Kation
Radium
Ra2+
⇄ Ra (s)
+ 2 e-
-2,71Na+ I
0
Natrium-Kation
Natrium
Na+
⇄ Na (s)
+ e-
-2,70Nd+III
+ II
Neodym(III)-Kation
Neodym(II)-Kation
Nd3+
⇄ Nd2+
+ e-
-2,68Sm+ II
0
Samarium(II)-Kation
Samarium
Sm2+
⇄ Sm (s)
+ 2 e-
-2,60Pm+ III
+ II
Promethium(III)-Kation
Promethium(II)-Kation
Pm3+
⇄ Pm2+
+ e-
-2,50No+ II
0
Nobelium(II)-Kation
Nobelium
No2+
⇄ No (s)
+ 2 e-
-2,50Md+II
0
Mendelevium(II)-Kation
Mendelevium
Md2+
⇄ Md
+ 2 e-
-2,379La+ III
0
Lanthan(III)-Kation
Lanthan
La3+
⇄ La (s)
+ 3 e-
-2,372Y+ III
0
Yttrium(III)-Kation
Yttrium
Y3+
⇄ Y (s)
+ 3 e-
-2,372Mg+ II
0
Magnesium(II)-Kation
Magnesium
Mg2+
⇄ Mg (s)
+ 2 e-
-2,37Fm+II
0
Fermium(II)-Kation
Fermium
Fm2+
⇄ Fm
+ 2 e-
-2,36Zr+ IV
0
Zirconiumoxid-hydroxid
Zirconium
ZrO(OH)2 (s) + H2O
⇄ Zr (s) + 4 OH-
+ 4 e-
-2,353Pr+ III
0
Praseodym(III)-Kation
Praseodym
Pr3+
⇄ Pr (s)
+ 3 e-
-2,336Ce+ III
0
Cer(III)-Kation
Cer
Ce3+
⇄ Ce (s)
+ 3 e-
-2,33Ho+ III
0
Holmium(III)-Kation
Holmium
Ho3+
⇄ Ho (s)
+ 3 e-
-2,33Al+ III
0
Tetrahydroxyaluminat-Anion
Aluminium
Al(OH)4-
⇄ Al (s) + 4 OH-
+ 3 e-
-2,323Nd+III
0
Neodym(III)-Kation
Neodym
Nd3+
⇄ Nd (s)
+ 3 e-
-2,32Er+ III
0
Erbium(III)-Kation
Erbium
Er3+
⇄ Er (s)
+ 3 e-
-2,31Al+ III
0
Aluminiumhydroxid
Aluminium
Al(OH)3 (s)
⇄ Al (s) + 3 OH-
+ 3 e-
-2,31Tb+ III
0
Terbium(III)-Kation
Terbium
Tb3+
⇄ Tb
+ 3 e-
-2,304Sm+ III
0
Samarium(III)-Kation
Samarium
Sm3+
⇄ Sm (s)
+ 3 e-
-2,30Pm+ III
0
Promethium(III)-Kation
Promethium
Pm3+
⇄ Pm (s)
+ 3 e-
-2,28Lu+ III
0
Lutetium(III)-Kation
Lutetium
Lu3+
⇄ Lu (s)
+ 3 e-
-2,25H0
- I
Wasserstoff
Hydrid-Anion
H2 (g)
⇄ 2 H-
+ 2 e-
-2,20Ac+ III
0
Actinium(III)-Kation
Actinium
Ac3+
⇄ Ac (s)
+ 3 e-
-2,20Pm+ II
0
Promethium(II)-Kation
Promethium
Pm2+
⇄ Pm (s)
+ 2 e-
-2,10Nd+II
0
Neodym(II)-Kation
Neodym
Nd2+
⇄ Nd (s)
+ 2 e-
-2,10Ho+ II
0
Holmium(II)-Kation
Holmium
Ho2+
⇄ Ho (s)
+ 2 e-
-2,077Sc+ III
0
Scandium(III)-Kation
Scandium
Sc3+
⇄ Sc (s)
+ 3 e-
-2,031Pu+III
0
Plutonium(III)-Kation
Plutonium
Pu3+
⇄ Pu (s)
+ 3 e-
-2,01Bk+III
0
Berkelium(III)-Kation
Berkelium
Bk3+
⇄ Bk (s)
+ 3 e-
-2,00Pr+ II
0
Praseodym(II)-Kation
Praseodym
Pr2+
⇄ Pr (s)
+ 2 e-
-1,96Fm+III
0
Fermium(III)-Kation
Fermium
Fm3+
⇄ Fm
+ 3 e-
-1,96Lr+ III
0
Lawrencium(III)-Kation
Lawrencium
Lr3+
⇄ Lr (s)
+ 3 e-
-1,90Pa+ IV
+ III
Protactinium(IV)-Kation
Protactinium(III)-Kation
Pa4+
⇄ Pa3+
+ e-
-1,856Np+ III
0
Neptunium(III)-Kation
Neptunium
Np3+
⇄ Np (s)
+ 3 e-
-1,85Be+ II
0
Beryllium(II)-Kation
Beryllium
Be2+
⇄ Be (s)
+ 2 e-
-1,74Md+III
0
Mendelevium(III)-Kation
Mendelevium
Md3+
⇄ Md
+ 3 e-
-1,70Hf+IV
0
Hafnium(IV)-Kation
Hafnium
Hf4+
⇄ Hf (s)
+ 4 e-
-1,66Al+ III
0
Aluminium(III)-Kation
Aluminium
Al3+
⇄ Al (s)
+ 3 e-
-1,66U+ III
0
Uran(III)-Kation
Uran
U3+
⇄ U (s)
+ 3 e-
-1,63Ti+ II
0
Titan(II)-Kation
Titan
Ti2+
⇄ Ti (s)
+ 2 e-
-1,553Zr+ IV
0
Zirkoniumdioxid
Zirkonium
ZrO2 + 4 H+
⇄ Zr (s) + 2 H2O
+ 4 e-
-1,55Sm+ III
+ II
Samarium(III)-Kation
Samarium(II)-Kation
Sm3+
⇄ Sm2+
+ e-
-1,49Pa+ IV
0
Protactinium(IV)-Kation
Protactinium
Pa4+
⇄ Pa (s)
+ 4 e-
-1,45Zr+ IV
0
Zirkonium(IV)-Kation
Zirkonium
Zr4+
⇄ Zr (s)
+ 4 e-
-1,37Ti+ III
0
Titan(III)-Kation
Titan
Ti3+
⇄ Ti (s)
+ 3 e-
-1,34Pa+ III
0
Protactinium(III)-Kation
Protactinium
Pa3+
⇄ Pa (s)
+ 3 e-
-1,31Ti+ II
0
Titanmonoxid
Titan
TiO (s) + 2 H+
⇄ Ti (s) + H2O
+ 2 e-
-1,23Ti+ III
+ II
Titan(III)-oxid
Titanmonoxid
Ti2O3 + 2 H+
⇄ 2 TiO (s) + H2O
+ 2 e-
-1,20No+ III
0
Nobelium(III)-Kation
Nobelium
No3+
⇄ No (s)
+ 3 e-
-1,199Zn+ II
0
Tetrahydroxyzinkat
Zink
Zn(OH)42-
⇄ Zn (s) + 4 OH-
+ 2 e-
-1,185Mn+ II
0
Mangan(II)-Kation
Mangan
Mn2+
⇄ Mn (s)
+ 2 e-
-1,16Fe+ II
0
Hexacyanoferrat(II)-Anion
Eisen
[Fe(CN)6]4- + 6 H+
⇄ Fe (s) + 4 HCN (g)
+ 2 e-
-1,143Te0
- II
Tellur
Tellurid-Dianion
Te (s)
⇄ Te2-
+ 2 e-
-1,13V+ II
0
Vanadium(II)-Kation
Vanadium
V2+
⇄ V (s)
+ 2 e-
-1,099Nb+ III
0
Niob(III)-Kation
Niob
Nb3+
⇄ Nb (s)
+ 3 e-
-1,07Sn0
- IV
Zinn
Stannan
Sn (s) + 4 H+
⇄ SnH4 (g)
+ 4 e-
-0,962Np+ IV
+ III
Neptunium(IV)-oxid
Neptunium(III)-Hydroxid
NpO2 + H2O + H+
⇄ Np(OH)3
+ e-
-0,89Fe+ II
0
Eisen(II)-hydroxid
Eisen
Fe(OH)2 (s)
⇄ Fe (s) + 2 OH-
+ 2 e-
-0,89B+ III
0
Borsäure
Bor
H3BO3 + 3 H+
⇄ B (s) + 3 H2O
+ 3 e-
-0,86Fe+ III
+ II
Eisen(III)-oxid
Eisen(II)-hydroxid
Fe2O3 (s) + 3 H2O
⇄ 2 Fe(OH)2 (s) + 2 OH-
+ 2 e-
-0,8277H+ I
0
Wasser
Wasserstoff
2 H2O (l)
⇄ H2 (g) + 2 OH-
+ 2 e-
-0,81Ta+ V
0
Tantal(V)-oxid
Tantal
Ta2O5 + 10 H+
⇄ 2 Ta (s) + 5 H2O
+ 10 e-
-0,80Bi0
- III
Bismut
Bismutan
Bi (s) + 3 H+
⇄ BiH3
+ 3 e-
-0,7618Zn+ II
0
Zink(II)-Kation
Zink
Zn2+
⇄ Zn (s)
+ 2 e-
-0,74Cr+ III
0
Chrom(III)-Kation
Chrom
Cr3+
⇄ Cr (s)
+ 3 e-
-0,604Re+ VII
0
Perrhenat-Anion
Rhenium
ReO4- + 2 H2O
⇄ Re + 8 OH-
+ 7 e-
-0,60Au+ I
0
Dicyanoaurat(I)-Anion
Gold
[Au(CN)2]-
⇄ Au (s) + 2 CN-
+ e-
-0,60Ta+ III
0
Tantal(III)-Kation
Tantal
Ta3+
⇄ Ta (s)
+ 3 e-
-0,58Pb+ II
0
Bleimonoxid
Blei
PbO (s) + H2O
⇄ Pb (s) + 2 OH-
+ 2 e-
-0,56Ti+ IV
+ III
Titandioxid
Titan(III)-oxid
2 TiO2 (s) + 2 H+
Ti2O3 (s) + H2O
+ 2 e-
-0,53Ga+ III
0
Gallium(III)-Kation
Gallium
Ga3+
⇄ Ga (s)
+ 3 e-
-0,52U+ IV
+ III
Uran(IV)-Kation
Uran(III)-Kation
U4+
⇄ U3+
+ e-
-0,499P+ III
+ I
Phosphonsäure
Phosphinsäure
H3PO3 (aq) + 2 H+
⇄ H3PO2 + H2O
+ 2 e-
-0,49In+III
+II
Indium(III)-Kation
Indium(II)-Kation
In3+
⇄ In2+
+ 1 e-
-0,49Ni+ IV
+ II
Nickel(IV)-oxid
Nickel(II)-hydroxid
NiO2 + 2 H2O
⇄ Ni(OH)2 + 2 OH-
+ 2 e-
-0,45Ta+ V
0
Tantalheptafluorid-Dianion
Tantal
TaF72-
⇄ Ta + 7 F-
+ 5 e-
-0,443In+III
+I
Indium(III)-Kation
Indium(I)-Kation
In3+
⇄ In+
+ 2 e-
-0,44Fe+ II
0
Eisen(II)-Kation
Eisen
Fe2+
⇄ Fe (s)
+ 2 e-
-0,43C+ IV
+ III
Kohlendioxid
Oxalsäure
2 CO2 (g) + 2 H+
⇄ HOOC-COOH (aq)
+ 2 e-
-0,42Cr+ III
+ II
Chrom(III)-Kation
Chrom(II)-Kation
Cr3+
⇄ Cr2+
+ e-
-0,40Cd+ II
0
Cadmium(II)-Kation
Cadmium
Cd2+
⇄ Cd (s)
+ 2 e-
-0,40In+II
+I
Indium(II)-Kation
Indium(I)-Kation
In2+
⇄ In+
+ 1 e-
-0,37Ge+ IV
+ II
Germaniumdioxid
Germaniumoxid
GeO2 + 2 H+
⇄ GeO (s) + H2O (l)
+ 2 e-
-0,36Cu+ I
0
Kupfer(I)-oxid
Kupfer
Cu2O (s) + H2O (l)
⇄ 2 Cu (s) + 2 OH-
+ 2 e-
-0,3588Pb+ II
0
Bleisulfat
Blei
PbSO4 (s)
⇄ Pb (s) + SO42-
+ 2 e-
-0,35Eu+ III
+ II
Europium(III)-Kation
Europium(II)-Kation
Eu3+
⇄ Eu2+
+ e-
-0,34Tl+ I
0
Thallium(I)-Kation
Thallium
Tl+
⇄ Tl (s)
+ e-
-0,3382In+ III
0
Indium(III)-Kation
Indium
In3+
⇄ In (s)
+ 3 e-
-0,29Ge0
- IV
Germanium
Monogerman
Ge (s) + 4 H+
⇄ GeH4 (g)
+ 4 e-
-0,28Co+ II
0
Cobalt(II)-Kation
Cobalt
Co2+
⇄ Co (s)
+ 2 e-
-0,276P+ V
+ III
Phosphorsäure
Phosphonsäure
H3PO4 (aq) + 2 H+
⇄ H3PO3 (aq) + H2O
+ 2 e-
-0,26V+ III
+ II
Vanadium(III)-Kation
Vanadium(II)-Kation
V3+
⇄ V2+
+ e-
-0,257Ni+ II
0
Nickel(II)-Kation
Nickel
Ni2+
⇄ Ni (s)
+ 2 e-
-0,23As0
- III
Arsen
Arsenwasserstoff
As (s) + 3 H+
⇄ AsH3 (g)
+ 3 e-
-0,16Md+III
+II
Mendelevium(III)-Kation
Mendelevium(II)-Kation
Md3+
⇄ Md2+
+ 1 e-
-0,15224Ag+ I
0
Silberiodid
Silber
AgI (s)
⇄ Ag (s) + I-
+ e-
-0,15Mo+ IV
0
Molybdändioxid
Molybdän
MoO2 (s) + 4 H+
⇄ Mo (s) + 2 H2O
+ 4 e-
-0,14Si0
- IV
Silicium
Monosilan
Si(s) + 4 H+
⇄ SiH4 (g)
+ 4 e-
-0,14In+I
0
Indium(II)-Kation
Indium
In+
⇄ In (s)
+ 1 e-
-0,13O0
- I
Sauerstoff
Hydroperoxy-Radikal
O2 (g) + H+
⇄ HO2• (aq)
+ e-
-0,13Pb+ II
0
Blei(II)-Kation
Blei
Pb2+
⇄ Pb (s)
+ 2 e-
-0,13Sn+ II
0
Zinn(II)-Kation
Zinn
Sn2+
⇄ Sn (s)
+ 2 e-
-0,12W+ IV
0
Wolframdioxid
Wolfram
WO2 (s) + 4 H+
⇄ W (s) + 2 H2O
+ 4 e-
-0,111P0
- III
Phosphor, rot
Monophosphan
P + 3 H+
⇄ PH3 (g)
+ 3 e-
-0,11Se0
- II
Selen
Selenwasserstoff
Se (s) + 2 H+
⇄ H2Se (g)
+ 2 e-
-0,11C+ IV
+ II
Kohlendioxid
Ameisensäure
CO2 (g) + 2 H+
⇄ HCOOH (aq)
+ 2 e-
-0,11C+ IV
+ II
Kohlendioxid
Kohlenmonoxid
CO2 (g) + 2 H+
⇄ CO (g) + H2O
+ 2 e-
-0,10Sn+ II
0
Zinnoxid
Zinn
SnO (s) + 2 H+
⇄ Sn (s) + H2O
+ 2 e-
-0,09W+ VI
0
Wolframtrioxid
Wolfram
WO3 (aq) + 6 H+
⇄ W (s) + 3 H2O
+ 6 e-
-0,09Sn+ IV
+ II
Zinndioxid
Zinnoxid
SnO2 (s) + 2 H+
⇄ SnO (s) + H2O
+ 2 e-
-0,063P0
- III
Phosphor, weiß
Monophosphan
P + 3 H+
⇄ PH3 (g)
+ 3 e-
-0,04Fe+ III
0
Eisen(III)-Kation
Eisen
Fe3+
⇄ Fe (s)
+ 3 e-
-0,03C+ II
0
Ameisensäure
Methanal
HCOOH (aq) + 2 H+
⇄ HCHO (aq) + H2O
+ 2 e-
0,00H+ I
0
Proton
Wasserstoff
2 H+
⇄ H2 (g)
+ 2 e-
0,07Pd+ II
0
Palladium(II)-hydroxid
Palladium
Pd(OH)2
⇄ Pd (s) + 2 OH-
+ 2 e-
0,07133Ag+ I
0
Silberbromid
Silber
AgBr (s)
⇄ Ag (s) + Br-
+ e-
0,085Fe+II/+III
0
Eisen(II,III)-oxid
Eisen
FeII(FeIII)2O4 + 8 H+
⇄ 3 Fe (s) + 4 H2O
+ 8 e-
0,092N0
- III
Stickstoff
Ammoniumhydroxid
N2 (g) + 2 H2O (aq)
⇄ 2 NH4OH (aq)
+ 6 e-
0,0977Hg+ II
0
Quecksilber(II)-oxid
Quecksilber
HgO (s) + H2O (aq)
⇄ Hg (l) + 2 OH-
+ 2 e-
0,10Cu+ II
+ 1
Tetraamminkupfer(II)-Kation
Diamminkupfer(I)-Kation
Cu(NH3)42+
⇄ Cu(NH3)2+ + 2 NH3
+ e-
0,11N- II
- III
Hydrazin
Ammonium-Ion
N2H4 (aq) + 4 H2O
⇄ 2 NH4+ + 4 OH-
+ 2 e-
0,11Mo+ VI
0
Molybdänsäure
Molybdän
H2MoO4 + 6 H+
⇄ Mo (s) + 4 H2O
+ 6 e-
0,12Ge+ IV
0
Germanium(IV)-Kation
Germanium
Ge4+
⇄ Ge (s)
+ 4 e-
0,13C0
- IV
Kohlenstoff
Methan
C (s) + 4 H+
⇄ CH4 (g)
+ 4 e-
0,14S0
- II
Schwefel
Schwefelwasserstoff
S (s) + 2 H+
⇄ H2S (g)
+ 2 e-
0,14Pt+ II
0
Platin(II)-hydroxid
Platin
Pt(OH)2
⇄ Pt + 2 OH-
+ 2 e-
0,147Np+ IV
+ III
Neptunium(IV)-Kation
Neptunium(III)-Kation
Np4+
⇄ Np3+
+ e-
0,15Sn+ IV
+ II
Zinn(IV)-Kation
Zinn(II)-Kation
Sn4+
⇄ Sn2+
+ 2 e-
0,159Cu+ II
+ I
Kupfer(II)-Kation
Kupfer(I)-Kation
Cu2+
⇄ Cu+
+ e-
0,16S+ VI
+ IV
Hydrogensulfat-Anion
Schwefeldioxid
HSO4- + 3 H+
⇄ SO2 (aq) + 2 H2O (aq)
+ 2 e-
0,17S+ VI
+ IV
Sulfat-Anion
Schwefeldioxid
SO42- + 4 H+
⇄ SO2 (aq) + 2 H2O (aq)
+ 2 e-
0,20Sb+ III
0
Antimonyl-Kation
Antimon
SbO+ + 2 H+
⇄ Sb (s) + H2O
+ 3 e-
0,22233Ag+ I
0
Silberchlorid
Silber
AgCl (s)
⇄ Ag (s) + Cl-
+ e-
0,223Ir+ IV
+ III
Iridiumdioxid
Iridium(III)-Kation
IrO2 + 4 H+
⇄ Ir3+ + 2 H2O
+ e-
0,24As+ III
0
Arsenige Säure
Arsen
H3AsO3 (aq) + 3 H+
⇄ As (s) + 3 H2O
+ 3 e-
0,2487Ru+ III
+ II
Ruthenium(III)-Kation
Ruthenium(II)-Kation
Ru3+
⇄ Ru2+
+ e-
0,2513Re+ IV
0
Rhenium(IV)-oxid
Rhenium
ReO2 + 4 H+
⇄ Re + 2 H2O
+ 4 e-
0,26Ge+ II
0
Germaniumoxid
Germanium
GeO (s) + 2 H+
⇄ Ge (s) + H2O
+ 2 e-
0,272Tc+ IV
0
Technetiumdioxid
Technetium
TcO2 + 4 H+
⇄ Tc + 4 H2O
+ 4 e-
0,30Re+ III
0
Rhenium(III)-Kation
Rhenium
Re3+
⇄ Re (s)
+ 3 e-
0,308Bi+ III
0
Bismut(III)-Kation
Bismut
Bi3+
⇄ Bi (s)
+ 3 e-
0,327U+ VI
+ IV
Uranyl-Kation
Uran(IV)-Kation
UO22+ + 4 H+
⇄ U4+ + H2O
+ 2 e-
0,34Cu+ II
0
Kupfer(II)-Anion
Kupfer
Cu2+
⇄ 2 Cu (s)
+ 2 e-
0,34V+ IV
+ III
Vanadyl(IV)-Kation
Vanadium(III)-Kation
VO2+ + 2 H+
⇄ V3+ + H2O
+ e-
0,34Re+ VII
0
Perrhenat-Anion
Rhenium
ReO4- + 8 H+
⇄ Re + 4 H2O
+ 7 e-
0,36Fe+ III
+ II
Hexacyanoferrat(III)-Anion
Hexacyanoferrat(II)-Anion
[Fe(CN)6]3-
⇄ [Fe(CN)6]4-
+ e-
0,368Po+ II
0
Polonium(II)-Kation
Polonium
Po2+
⇄ Po (s)
+ 2 e-
0,401O0
- II
Sauerstoff
Hydroxy-Anion
O2 (g) + 2 H2O
⇄ 4 OH-
+ 4 e-
0,43Mo+ VI
+ III
Molybdänsäure
Molybdän(III)-Anion
H2MoO4 + 6 H+
⇄ Mo3+ + 2 H2O
+ 3 e-
0,431Rh+ III
0
Hexachlororhodat(III)-Anion
Rhodium
[RhCl6]3-
⇄ Rh + 6 Cl-
+ 3 e-
0,455Ru+ II
0
Ruthenium(II)-Kation
Ruthenium
Ru2+
⇄ Ru (s)
+ 2 e-
0,472Tc+ VII
0
Pertechnat-; Technat(VII)-Anion
Technetium
TcO4- + 8 H+
⇄ Tc + 4 H2O
+ 7 e-
0,49Ir+ IV
+ III
Hexaiodoiridium(IV)
Hexaiodoiridium(III)
IrI62-
⇄ IrI63-
+ e-
0,50S+ IV
0
Schwefeldioxid
Schwefel
SO2 (aq) + 4 H+
⇄ S (s) + 2 H2O
+ 4 e-
0,51Re+ VII
+ IV
Perrhenat-Anion
Rhenium(IV)-oxid
ReO4- + 4 H+
⇄ ReO2 + 2 H2O
+ 3 e-
0,52C+ II
0
Kohlenmonoxid
Kohlenstoff
CO (g) + 2 H+
⇄ C (s) + H2O
+ 2 e-
0,52Cu+ I
0
Kupfer(I)-Anion
Kupfer
Cu+
⇄ Cu (s)
+ e-
0,5355I0
- I
Iod
Iodid-Anion
I2 (s)
⇄ 2 I-
+ 2 e-
0,536I0/-I
- I
Triiodid-Anion
Iodid-Anion
I3-
⇄ 3 I-
+ 2 e-
0,56Au+ III
0
Tetraiodogold(III)-Anion
Gold
[AuI4]-
⇄ Au (s) + 4 I-
+ 3 e-
0,56As+ V
+ III
Arsensäure
Arsenige Säure
H3AsO4 (aq) + 2 H+
⇄ H3AsO3 (aq) + H2O
+ 2 e-
0,569Tc+ VII
+ VI
Pertechnat-; Technat(VII)-Anion
Technat(VI)-Kation
TcO4-
⇄ TcO42-
+ e-
0,58Au+ I
0
Diiodogold(I)-Anion
Gold
[AuI2]-
⇄ Au (s) + 2 I-
+ e-
0,59Mn+ VII
+ IV
Manganat(VII)-Anion
Mangandioxid
MnO4- + 2 H2O
⇄ MnO2 (s) + 4 OH-
+ 3 e-
0,59Ru+ VII
+ VI
Tetraoxoruthenat(VII)-Anion
Tetraoxoruthenat(VI)-Anion
RuO4-
⇄ RuO42-
+ e-
0,591Pd+ II
0
Tetrachloropalladat(II)
Palladium
[PdCl4]2-
⇄ Pd (s) + 4 Cl-
+ 2 e-
0,60S+ II
0
Thiosulfat-Dianion
Schwefel
S2O32- + 6 H+
⇄ 2 S (s) + 3 H2O
+ 4 e-
0,60Rh+ I
0
Rhodium(I)-Kation
Rhodium
Rh+
⇄ Rh
+ e-
0,6125Hg+ I
0
Quecksilber(I)-sulfat
Quecksilber
Hg2SO4
⇄ 2 Hg + SO42-
+ 2 e-
0,65Mo+ VI
+ IV
Molybdänsäure
Molybdändioxid
H2MoO4 (aq) + 2 H+
⇄ MoO2 (s) + 2 H2O
+ 2 e-
0,70Tc+ VII
+ VI
Pertechnat-; Technat(VII)-Anion
Technetiumtrioxid
TcO4- + 2 H+
⇄ TcO3 + H2O
+ e-
0,72Tl+ III
0
Thallium(III)-Kation
Thallium
Tl3+
⇄ Tl (s)
+ 3 e-
0,726Pt+ IV
+ II
Hexachloroplatin(IV)-Dianion
Tetrachloroplatin(II)-Dianion
[PtCl6]2-
⇄ [PtCl4]2- + 2 Cl-
+ 2 e-
0,738Tc+ VII
+ IV
Pertechnat-; Technat(VII)-Anion
Technetiumdioxid
TcO4- + 4 H+
⇄ TcO2 + 2 H2O
+ 3 e-
0,74Se+ IV
0
Selenige Säure
Selen
H2SeO3 (aq) + 4 H+
⇄ Se (s) + 3 H2O
+ 4 e-
0,758Rh+ III
0
Rhodium(III)-Kation
Rhodium
Rh3+
⇄ Rh
+ 3 e-
0,758Pt+ II
0
Tetrachloroplatin(II)-Dianion
Platin
[PtCl4]2-
⇄ Pt (s) + 4 Cl -
+ 2 e-
0,768Re+ VII
+ VI
Perrhenat-Anion
Rhenium(VI)-oxid
ReO4- + 2 H+
⇄ ReO3 + H2O
+ e-
0,77Ir+ III
0
Hexachloroiridium(III)
Iridium
IrI63-
⇄ Ir + 6 Cl-
+ 3 e-
0,77Fe+ III
+ II
Eisen(III)-Kation
Eisen(II)-Kation
Fe3+
⇄ Fe2+
+ e-
0,7973Hg+ I
0
Quecksilber(I)-Kation
Quecksilber
Hg22+
⇄ 2 Hg (l)
+ 2 e-
0,7996Ag+ I
0
Silber-Kation
Silber
Ag+
⇄ Ag (s)
+ e-
0,80N+ V
+ IV
Nitrat-Anion
Stickstoffdioxid
NO3- (aq) + 2 H+ (aq)
⇄ NO2 (g) + H2O (aq)
+ e-
0,805Ir+ IV
+ III
Hexabromoiridium(IV)
Hexabromoiridium(III)
IrBr62-
⇄ IrBr63-
+ e-
0,81Fe+ VI
+ III
Ferrat-Anion
Eisen(III)-oxid
2 FeO42- + 5 H2O
⇄ Fe2O3 (s) + 10 OH- (aq)
+ 6 e-
0,835Ir+ IV
0
Hexachloroiridium(IV)
Iridium
IrCl62-
⇄ Ir + 6 Cl-
+ 4 e-
0,85Au+ III
0
Tetrabromoaurat-Anion
Gold
[AuBr4]-
⇄ Au (s) + 4 Br-
+ 3 e-
0,851Hg+ II
0
Quecksilber(II)-Kation
Quecksilber
Hg2+
⇄ 2 Hg (l)
+ 2 e-
0,867Ir+ IV
+ III
Hexachloroiridium(IV)
Hexachloroiridium(III)
IrCl62-
⇄ IrCl63-
+ e-
0,92Hg+ II
+ I
Quecksilber(II)-Kation
Quecksilber(I)-Kation
2 Hg2+
⇄ Hg22+
+ 2 e-
0,93Au+ III
0
Tetrachlorogold(III)-Kation
Gold
[AuCl3]-
⇄ Au (s) + 4 Cl-
+ 3 e-
0,95Mn+ IV
+ III
Mangandioxid
Mangan(III)-Kation
MnO2 (s) + 4 H+
⇄ Mn3+ + 2 H2O
+ e-
0,951Pd+ II
0
Palladium(II)-Kation
Palladium
Pd2+
⇄ Pd (s)
+ 2 e-
0,96Au+ I
0
Dibromoaurat(I)-Anion
Gold
[AuBr2]-
⇄ Au (s) + 2 Br-
+ e-
0,99Xe+ VIII
+ VI
Perxenat-Anion
Xenat-Anion
[XeO6]4- + 5 H+
⇄ HXeO4]2- + 2 H2O
+ 2 e-
1,00Pt+ IV
0
Platin(IV)-oxid
Platin
PtO2 + 4 H+
⇄ Pt + H2O
+ 4 e-
1,00Ru+ VIII
+ VII
Ruthenium(VIII)-oxid
Tetraoxoruthenat(VII)-Anion
RuO4
⇄ RuO4-
+ e-
1,006Pu+ IV
+ III
Plutonium(IV)-Kation
Plutonium(III)-Kation
Pu4+
⇄ Pu3+
+ e-
1,01Pt+ IV
+ II
Platin(IV)-oxid
Platin(II)-oxid
PtO2 + 2 H+
⇄ PtO + H2O
+ 2 e-
1,02Te+ VI
+ IV
Orthotellursäure
Tellurdioxid
H6TeO6 (aq) + 2 H+
TeO2 (s) + 4 H2O
+ 2 e-
1,038Ru+ VIII
0
Ruthenium(VIII)-oxid
Ruthenium
RuO4 + 8 H+
⇄ Ru + 4 H2O
+ 8 e-
1,0652Br0
- I
Brom elementar
Bromid-Anion
Br2 (l)
⇄ 2 Br- (aq)
+ 2 e-
1,0874Br0
- I
Brom in Lösung
Bromid-Anion
Br2 (aq)
⇄ 2 Br- (aq)
+ 2 e-
1,095Po+ IV
+ II
Polonium(IV)-oxid
Polonium(II)-Kation
PoO2 + 4 H+
⇄ Po2+ + 2 H2O
+ 2 e-
1,099Pu+ V
+ IV
Plutonium(V)-Kation
Plutonium(IV)-Kation
Pu5+
⇄ Pu4+
+ e-
1,12Ru+ IV
+ II
Ruthenium(IV)-oxid
Ruthenium(II)-Kation
RuO2 + 4 H+
⇄ Ru2+ + 2 H2O
+ 2 e-
1,13I+ V
+ I
Iodat-Anion
Hypoiodige Säure
[IO3]- + 5 H+
⇄ HIO (aq) + 2 H2O
+ 4 e-
1,15Se+ VI
+ IV
Hydrogenselenat-Anion
Selenige Säure
HSeO4- + 3 H+
⇄ H2SeO3 (aq) + H2O
+ 2 e-
1,15Au+ III
0
Dichlorogold(III)-Anion
Gold
[AuCl2]-
⇄ Au (s) + 2 Cl-
+ 3 e-
1,156Ir+ III
0
Iridium(III)-Kation
Iridium
Ir3+ + 2 H2O
⇄ Ir
+ 3 e-
1,17Ag+ I
0
Silber(I)-oxid
Silber
Ag2O (s) + 2 H+
⇄ 2 Ag (s) + H2O
+ 2 e-
1,18Cl+ V
+ IV
Chlorat-Anion
Chlordioxid
ClO3- + 2 H+
⇄ ClO2 (g) + H2O
+ e-
1,18Xe+ VIII
0
Hydrogenperxenat-Anion
Xenon
[HXeO6]3- + 5 H2O
⇄ Xe (g) + 11 OH-
+ 8 e-
1,188Pt+ II
0
Platin(II)-Kation
Platin
Pt2+
⇄ Pt (s)
+ 2 e-
1,19Cl+ IV
+III
Chlordioxid
Chlorige Säure
ClO2 (g) + H+ (aq)
⇄ HClO2 (aq)
+ e-
1,20I+ V
0
Iodat-Anion
Iod
IO3- + 12 H+
⇄ 2 I2 (s) + 6 H2O
+ 10 e-
1,201Cl+ VII
+ V
Perchlorat-Anion
Chlorat-Anion
ClO4- + 2 H+
⇄ ClO3- + 2 H2O
+ 2 e-
1,229O0
- II
Sauerstoff
Wasser
2 O2 (g) + 4 H+
⇄ 2 H2O
+ 4 e-
1,23Mn+ IV
+ II
Mangandioxid
Mangan(II)-Kation
MnO2 (s) + 4 H+
⇄ Mn2+ + 2 H2O
+ 2 e-
1,24Xe+ VI
0
Xenat-Anion
Xenon
[HXeO4]- + 3 H2O
⇄ Xe (g) + 7 OH-
+ 6 e-
1,25Tl+ III
+ I
Thallium(III)-Kation
Thallium(I)-Kation
Tl3+
⇄ Tl+
+ 2 e-
1,288Pd+ IV
+ II
Hexachloropalladat(IV)
Palladium
[PdCl6]2-
⇄ [PdCl4]2- + 2 Cl-
+ 2 e-
1,33Cr+ VI
+ III
Dichromat-Anion
Chrom(III)-Kation
Cr2O72- + 14 H+
⇄ 2 Cr3+ + 7 H2O
+ 6 e-
1,36Cl0
- I
Chlor
Chlorid-Anion
Cl2 (g)
⇄ 2 Cl-
+ 2 e-
1,39Tc+ VI
+ IV
Technat(VI)-Kation
Technetiumdioxid
TcO42- + 4 H+
⇄ TcO2 + 2 H2O
+ 2 e-
1,40No+ III
+ II
Nobelium(III)-Kation
Nobelium(II)-Kation
No3+
⇄ No2+
+ e-
1,42Co+ IV
+ III
Cobalt(IV)-oxid
Cobalt(III)-Kation
CoO2 (s) + 4 H+
⇄ Co3+ + 2 H2O
+ e-
1,42N- I
- II
Hydroxylammonium-Ion
Hydrazinium-Ion
2NH3OH+ + H+
⇄ N2H5+ + 2 H2O
+ 2 e-
1,44Ce+ IV
+ III
Cer(IV)-Kation
Cer(III)-Kation
Ce4+
⇄ Ce3+
+ e-
1,44I+ I
0
Hypoiodige Säure
Iod
2 HIO (aq) + 2 H+
⇄ I2 (aq) + 2 H2O
+ 2 e-
1,45Br+ V
+ I
Bromat-Anion
Hypobromige Säure
BrO3- + 5 H+
⇄ HBrO (aq) + 2 H2O
+ 4 e-
1,46Pb+ IV
+ II
Blei(IV)-Oxid, β-
Blei(II)-Kation
β-PbO2 (s) + 4 H+
⇄ Pb2+ + 2 H2O
+ 2 e-
1,468Pb+ IV
+ II
Blei(IV)-Oxid, α-
Blei(II)-Kation
α-PbO2 (s) + 4 H+
⇄ Pb2+ + 2 H2O
+ 2 e-
1,48Br+ V
0
Bromat-Anion
Brom
2 BrO3- + 12 H+
⇄ Br2 (l) + 6 H2O
+ 10 e-
1,49Cl+ V
0
Chlorat-Anion
Chlor
2 ClO3- + 12 H+
⇄ Cl2 (g) + 6 H2O
+ 10 e-
1,50Pt+ VI
+ IV
Platin(VI)-oxid
Platin(IV)-dihydroxido-Kation
PtO3 + 4 H+
⇄ Pt(OH)22+ + H2O
+ 2 e-
1,51O- 0,5
- I
Hydroperoxy-Radikal
Wasserstoffperoxid
HO2• + H+
⇄ H2O2
+ e-
1,51Mn+ VII
+ II
Permanganat-Anion
Mangan(II)-Kation
MnO4- + 8 H+
⇄ Mn2+ + 4 H2O
+ 5 e-
1,52Au+ III
0
Gold(III)-Kation
Gold
Au3+
⇄ Au (s)
+ 3 e-
1,63Cl+ I
0
Hypochlorige Säure
Chlor
2 HClO (aq) + 2 H+
⇄ Cl2 (g) + 2 H2O
+ 2 e-
1,67Ag+ III
+ I
Silber(III)-oxid
Silber-Kation
Ag2O3 (s) + 6 H+
⇄ 2 Ag+ + 3 H2O
+ 4 e-
1,67Cl+ III
+ I
Chlorige Säure
Hypochlorige Säure
HClO2 (aq) + 2 H+
⇄ HClO (aq) + H2O
+ 2 e-
1,678Ni+ IV
+ II
Nickeldioxid
Nickel(II)-Kation
NiO2 (s) + 4 H+
⇄ Ni2+ + 2 H2O
+ 2 e-
1,69Pb+ IV
+ II
Blei(IV)-Kation
Blei(II)-Kation
Pb4+
⇄ Pb2+
+ 2 e-
1,70Mn+ VII
+ IV
Permanganat-Anion
Mangandioxid
MnO4- + 4 H+
⇄ β-MnO2 (s) + 2 H2O
+ 3 e-
1,70Pt+ VI
+ IV
Platin(VI)-oxid
Platin(IV)-oxid
PtO3 + 2 H+
⇄ PtO2 + H2O
+ 2 e-
1,763O- I
- II
Wasserstoffperoxid
Wasser
H2O2 (aq) + 2 H+
⇄ 2 H2O
+ 2 e-
1,772Ag+ II
+ I
Silberoxid
Silber-Kation
AgO (s) + 2 H+
⇄ Ag+ + H2O
+ e e-
1,82Co+ III
+ II
Cobalt(III)-Kation
Cobalt(II)-Kation
Co3+
⇄ Co2+
+ e-
1,83Au+ I
0
Gold(I)-Anion
Gold
Au+
⇄ Au (s)
+ e-
1,85Br+ VII
+ V
Perbromat-Anion
Bromat-Anion
BrO4- + 2 H+
⇄ BrO3- + H2O
+ 2 e-
1,98Ag+ II
+ I
Silber(II)-Kation
Silber-Kation
Ag2+
⇄ Ag+
+ e-
2,01O- I
- II
Peroxodisulfat
Sulfat
S2O82-
⇄ 2 SO42-
+ 2 e-
2,075O0
- II
Ozon
Wasser
O3 + 2 H+
⇄ O2 + H2O
+ 2 e-
2,12Xe+ VI
0
Xenon(VI)-oxid
Xenon
XeO3 (aq) + 6 H+
⇄ Xe (g) + 3 H2O
+ 6 e-
2,18Xe+ VIII
0
Perxenonsäure
Xenon
H4XeO6 (aq) + 8 H+
⇄ Xe (g) + 6 H2O
+ 8 e-
2,20Fe+ VI
+ III
Ferrat(VI)-Anion
Eisen(III)-Kation
FeO42- + 8 H+
⇄ Fe3+ + 4 H2O
+ 3 e-
2,32Xe+ II
0
Xenondifluorid
Xenon
XeF2 (aq) + 2 H+
⇄ Xe (g) + 2 HF (aq)
+ 2 e-
2,42Xe+ VIII
+ VI
Perxenonsäure
Xenon(VI)-oxid
H4XeO6 (aq) + 2 H+
⇄ XeO3 (aq) + 3 H2O
+ 2 e-
2,866F0
- I
Fluor
Fluorid-Anion
F2 (g)
⇄ 2 + F-
+ 2 e-
3,05F0
- I
Fluor
Fluorwasserstoff
F2 (g) + 2 H+ (g)
⇄ 2 HF (aq)
+ 2 e-
3,20Pr+ IV
+ III
Praseodym(IV)-Kation
Praseodym(III)-Kation
Pr4+
⇄ Pr3+
+ e-

 

Quellen und weitere Informationen

[1] Milazzo, Caroli, Sharma: Tables of Standard Electrode Potentials. Wiley and Sons, 1978, ISBN 0471995347.

[2] A.J. Bard, R. Parson, J. Jordan: Standard Potentials in Aqueous Solution. Marcel Dekker, 1985, ISBN 0824772911.

[3] Steven G. Bratsch:
Standard Electrode Potentials and Temperature Coefficients in Water at 298.15 K.
Journal of Physical and Chemical Reference Data, 1989, DOI 10.1063/1.555839.

[4] Carl H. Hamann, Wolf Vielstich: Elektrochemie. Wiley-VCH, 2005, ISBN 3527310681.

[5] David R. Lide: CRC Handbook of Chemistry and Physics. Taylor and Francis, 90th revised edition, 2009, ISBN 142009084.

 


Kategorie: Daten und Tabellen

Letzte Änderung am 17.04.2020.



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