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