Standardní redukční elektrodové potenciály při 25°C - elektrody prvého druhu
|
Elektroda |
Elektrodová reakce |
E° (V) |
|
Kationtové reakce |
||
|
Ag+/Ag |
Ag+ + e- → Ag |
+ 0,799 |
|
Al3+/Al |
Al3+ + 3 e− → Al |
- 1,662 |
|
Au3+/Au |
Au3+ + 3 e− → Au |
+ 1,498 |
|
Ba2+/Ba |
Ba2+ + 2 e− → Ba |
- 2,906 |
|
Be2+/Be |
Be2+ + 2 e− → Be |
- 1,847 |
|
Ca2+/Ca |
Ca2+ + 2 e− → Ca |
- 2,866 |
|
Cd2+/Cd |
Cd2+ + 2 e− → Cd |
- 0,401 |
|
Co2+/Co |
Co2+ + 2 e− → Co |
- 0,277 |
|
Cr2+/Cr |
Cr2+ + 2 e− → Cr |
- 0,913 |
|
Cr3+/Cr |
Cr3+ + 3 e− → Cr |
- 0,744 |
|
Cu+/Cu |
Cu+ + e− → Cu |
+ 0,521 |
|
Cu2+/Cu |
Cu2+ + 2 e− → Cu |
+ 0,337 |
|
Fe2+/Fe |
Fe2+ + 2 e− → Fe |
- 0,441 |
|
Fe3+/Fe |
Fe3+ + 3 e− → Fe |
- 0,036 |
|
H+/(1/2 H2) |
H+ + e− → 1/2 H2 |
0,000 |
|
Hg2+/Hg |
Hg2+ + 2 e− → Hg |
+ 0,854 |
|
K+/K |
K+ + e− → K |
- 2,925 |
|
La3+/La |
La+ + e− → La |
- 2,522 |
|
Li+/Li |
Li+ + e− → Li |
- 3,045 |
|
Mg2+/Mg |
Mg2+ + 2 e− → Mg |
- 2,363 |
|
Mn2+/Mn |
Mn2+ + 2 e− → Mn |
- 1,180 |
|
Na+/Na |
Na+ + e− → Na |
- 2,714 |
|
Ni2+/Ni |
Ni2+ + 2 e− → Ni |
- 0,250 |
|
Pb2+/Pb |
Pb2+ + 2 e− → Pb |
- 0,126 |
|
Sn2+/Sn |
Sn2+ + 2 e− → Sn |
- 0,140 |
|
Sr2+/Sr |
Sr2+ + 2 e− → Sr |
- 2,888 |
|
Th4+/Th |
Th4+ + 4 e− → Th |
- 1,899 |
|
Tl+/Tl |
Tl+ + e− → Tl |
- 0,336 |
|
Zn2+/Zn |
Zn2+ + 2 e− → Zn |
- 0,763 |
|
1/2 Hg+/Hg |
1/2 Hg+ + e− → Hg |
+ 0,799 |
|
Aniontové reakce |
||
|
Elektroda |
Elektrodová reakce |
E° (V) |
|
1/2 O2/OH− |
1/2 O2 + H2O + 2 e− → 2 OH− |
+ 0,401 |
|
1/2 I2(s)/I− |
1/2 I2 + e− → I− |
+ 0,536 |
|
1/2 Br2/Br− |
1/2 Br2 + e− → Br− |
+ 1,065 |
|
1/2 Cl2/Cl− |
1/2 Cl2 + e− → Cl− |
+ 1,360 |
|
1/2 F2/F− |
1/2 F2 + e− → F− |
+ 2,870 |
|
S/S2− |
S + 2 e− → S2− |
- 0,447 |
|
Se/Se2- |
Se + 2 e− → Se2− |
- 0,920 |