Ox + n e– |
→ |
Red |
E° (V) |
K+(aq) + e– |
→ |
K(s) |
-2.92 |
Na+(aq) + e– |
→ |
Na(s) |
-2.71 |
Mg2+(aq) + 2 e– |
→ |
Mg(s) |
-2.36 |
Al3+(aq) + 2 e– |
→ |
Al(s) |
-1.66 |
2 H2O(l) + 2 e– |
→ |
H2(g) + 2 OH–(aq) |
-0.83 |
Zn2+(aq) + 2 e– |
→ |
Zn(s) |
-0.76 |
Fe2+(aq) + 2 e– |
→ |
Fe(s) |
-0.44 |
PbSO4(aq) + 2 e– |
→ |
Pb(s) + SO42–(aq) |
-0.36 |
Ni2+(aq) + 2 e– |
→ |
Ni(s) |
-0.23 |
Sn2+(aq) + 2 e– |
→ |
Sn(s) |
-0.14 |
Pb2+(aq) + 2 e– |
→ |
Pb(s) |
-0.13 |
2 H+(aq) + 2 e– |
→ |
H2(g) |
0.00 |
SO42–(aq) + 4 H+(aq) + 2 e– |
→ |
H2SO3(aq) + H2O(l) |
+0.20 |
Cu2+(aq) + 2 e– |
→ |
Cu(s) |
+0.34 |
O2(g) + 2 H2O(l) + 4 e– |
→ |
4 OH–(aq) |
+0.40 |
I2(s) + 2 e– |
→ |
2 I–(aq) |
+0.54 |
Fe3+(aq) + e– |
→ |
Fe2+(aq) |
+0.77 |
Ag+(aq) + e– |
→ |
Ag(s) |
+0.80 |
NO3–(aq) + 4 H+(aq) + 3 e– |
→ |
NO(g) + 2 H2O |
+0.96 |
Br2(l) + 2 e– |
→ |
2 Br–(aq) |
+1.09 |
Pt2+(aq) + 2 e– |
→ |
Pt(s) |
+1.19 |
O2(g) + 4 H+(aq) + 4 e– |
→ |
2 H2O(l) |
+1.23 |
Cr2O72–(aq) + 14 H+(aq) + 6 e– |
→ |
2 Cr3+(aq) + 7 H2O(l) |
+1.33 |
Cl2(l) + 2 e– |
→ |
2 Cl–(aq) |
+1.36 |
Au3+(aq) + 3 e– |
→ |
Au(s) |
+1.50 |
MnO4–(aq) + 8 H+(aq) + 5 e– |
→ |
Mn2+(aq) + 4 H2O(l) |
+1.51 |
PbO2(s) + 4 H+(aq) + SO42–(aq) + 2 e– |
→ |
PbSO4(s) + 2 H2O(l) |
+1.69 |
F2(l) + 2 e– |
→ |
2 F–(aq) |
+2.87 |