标准电极电位 (298.15K)
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HClO+H++2e-⇌Cl-+H2O
1.49
Au3+/Au
Au3++3e-⇌Au
1.50
BrO3-/Br2
2BrO3-+12H++10e-⇌Br2+6H2O
1.5
MnO4-/Mn2+
MnO4-+8H++5e-⇌Mn2++4H2O
1.51
HBrO/Br2
2HBrO+2H++2e-⇌Br2+2H2O
1.6
H2+e-⇌H-
Sc3++3e-⇌Sc
Th4++4e-⇌Th
-2.25
-2.1
-1,9
Be+/Be
Be2++2e-⇌Be
-1.85
U3+/U
U3++3e-⇌U
-1.80
Al3+/Al
Al3++3e-⇌Al
-1.66
Ti2+/Ti
Ti2++2e-⇌Ti
-1.63
ZrO2/Zr
ZrO2+4H++4e-⇌Zr+H2O
Mn(OH)2+2e-⇌Mn+20H-
[Zn(CN)4]2-+2e-⇌Zn+4CN-
ZnO22-+2H2O+2e-⇌Zn+4OH-
2SO32-+2H2O+2e-⇌S2O42-+4OH-
[Zn(NH3)4]2++2e-⇌Zn+4NH3
[Sn(OH)6]2-+2e-⇌HSnO2-+30H-+H2O
SO42-+H2O+2e-⇌SO32-+20H-
1.8
S2O82-/ SO42-
S2O82-+2e-⇌2SO42-
2.0
O3/O2
XeF2/Xe
F2/F-
H4XeO6/XeO3
F2/HF
O3+2H++2e-⇌O2+H2O
XeF2+2e-⇌Xe+2F-
F2+2e-⇌2F-
H4XeO6+2H++2e-⇌XeO3+3H2O
F2(g)+2H++2e-⇌2HF
ClO3-+3H++2e-⇌HClO2+H2O
1.21
O2/H2O
O2+4H++4e-⇌2H2O
1.229
MnO2/ Mn2+
MnO2+4H++4e-⇌Mn2++2H2O
1.23
ClO2/ HClO2
ClO2(g)+H++e-⇌HClO2
1.27
Cr2O72-/ Cr3+
Cr2O72-+14H++6e-⇌2Cr3++7H2O
1.33
ClO4-/ Cl2
2ClO4-+16H++14e-⇌Cl2+8H2O
1.34
Cl2/ Cl-
Cl2+2e-⇌2Cl-
1.36
Au3+/Au+
Au3++2e-⇌Au+
1.41
BrO3-/Br-
BrO3-+6H++6e-⇌Br-+3H2O
1.44
HIO/I2
ClO3-/Cl-
PbO2/ Pb2+
Hg2++2e-⇌Hg
0.854
Cu2+/CuI
Cu2++I-+e-⇌CuI
0.86
Hg2+/Hg22+
2Hg2++2e-⇌Hg22+
0.907
Pd2+/Pd
Pd2++2e-⇌Pd
0.92
NO3-/ HNO2
NO3-+3H++2e-⇌HNO2+H2O
0.94
NO3-/ NO
NO3-+4H++3e-⇌NO+2H2O
2HIO+2H++2e-⇌I2+2H2O
ClO3-+6H++6e-⇌Cl-+3H2O
PbO2+4H++2e-⇌Pb2++2H2O
1.45
1.45
1.455
ClO3-/ Cl2
2ClO3-+12H++10e-⇌Cl2+6H2O
1.47
Mn3+/Mn2+
Mn3++e-⇌Mn2+
1.488
HClO/ Cl-
NiO2+4H++2e-⇌Ni2++2H2O
1.68
PbO2/PbSO4
PbO2+SO42-+4H++2e-⇌PbSO4+2H2O
1.69
H2O2/H2O
H2O2+2H++2e-⇌2H2O
1.77
Co3+/Co2+
Co3++e-⇌Co2+
1.80
XeO3/Xe
XeO3+6H++6e-⇌Xe+3H2O
0.69
[PtCl4]2-/Pt
[PtCl4]2-+2e-⇌Pt+4Cl-
0.73
Fe3+/Fe2+
Fe3++e-⇌Fe2+
0.771
Hg22+/Hg
Hg22++2e⇌2Hg
0.792
Ag+/Ag
Ag++e-⇌Ag
0.7999
NO3-/ NO2
NO3-+H++e-⇌NO2+H2O
0.80
Hg2+/Hg
2.07
2.2
2.87
3.0
3.06
2.在碱性溶液中
电对
电极反应
/V
Mg(OH)2/Mg
Mg(OH)2+2e-⇌Mg+2OH-
-2.69
H2AIO3-/Al
H2BO3-/B
Mn(OH)2/Mn
Zn(CN)4]2-/Zn
ZnO22-/Zn
S032-/S2O42-
[Zn(NH3)4]2+/Zn
[Sn(OH)6]2-/HSnO2-
1.14
ClO3-/ ClO2
ClO3-+2H++e-⇌ClO2+H2O
1.15
Ag2O/Ag
ClO4-/ ClO3-
IO3-/I2
Ag2O+2H++2e-⇌2Ag+H2O
ClO4-+2H++2e-⇌ClO3-+H2O
2IO3-+12H++10e-⇌I2+6H2O
1.17
1.19
1.19
ClO3-/ HClO2
S042-/S032-
HSnO2-/Sn
H2O/H2
Ni(OH)2/Ni
AsO43-/AsO2-
S032-/S
AsO2-/As
SO32-/S2O32-
S/S2-
[Ag(CN)2]-/Ag
CrO42-/CrO2-
O2/HO2-
NO3-/NO2-
S4O62-/S2O32-
HgO/Hg
Mn(OH)3/ Mn(OH)2
H2O2+2e-⇌2OH-
CIO-+H2O+2e-⇌CI-+2OH-
HXeO63-+2H2O+e-⇌HXeO4+4OH-
HXeO4+3H2O+7e-⇌Xe+7OH-
O3+H2O+2e-⇌O2+2OH-
-2.35
-1.79
-1.55
-1.26
-1.216
-1.12
-1.04
-0.93
-0.93
-0.91
Cr3++3e-⇌Cr
-0.86
-0.763
-0.74
Ag2S/Ag
Ag2S+2e-⇌Ag+S2-
-0.71
CO2/H2C2O4
Fe2+/Fe
CO2+2H++2e-⇌H2C2O4
Fe2++2e-⇌Fe
-0.49
-0.440
Cr3+/ Cr2+
Cr3++e-⇌Cr2+
-0.41
Cd2+/Cd
Cd2++2e-⇌Cd2
S+2e-⇌S2-
Ag(CN)2]-+e-⇌Ag+2CN-
CrO42-+2H2O+3e-⇌CrO2-+4OH-
O2+H2O+2e-⇌HO2-+OH-
NO3-+H2O+2e-⇌NO2-+20H-
S4O62-+2e-⇌2S2O32-
HgO+H2O+2e-⇌Hg+2OH-
Mn(OH)3+e-⇌Mn(OH)2+OH-
-0.828
-0.72
-0.67
-0.66
-0.66
-0.58
-0.48
-0.31
-0.12
-0.076
0.01
0.09
0.098Leabharlann 0.10.10.17
0.34
0.41
0.588
0.61
0.76
0.88
0.89
0.9
0.9
1.24
VO2+/V3+
VO2++2H++e-⇌V3++H2O
0.34
Cu2+/Cu
Cu2++2e-⇌Cu
0.34
S2O32-/S
S2O32-+6H++4e-⇌2S+3H2O
0.5
Cu+/Cu
Cu++e-⇌Cu
0.52
I3-/I-
I3-+2e-⇌3I-
0.545
I2/I-
I2+2e-⇌2I-
0.535
MnO4-/ MnO42-
[Co(NH3)63+]+e-⇌[Co(NH3)6]2+
Co(OH)3+e-⇌Co(OH)2+OH-
Ag2O+H2O+2e-⇌2Ag+2OH-
O2+2H2O+4e-⇌4OH-
MnO4-+2H2O+3e-⇌MnO2+4OH-
BrO3-+3H2O+6e-⇌Br-+6OH-
BrO-+H2O+2e-⇌Br-+2OH-
附录五标准电极电位(298.15K)
1.在酸性溶液中
电对
电极反应
/V
Li+/Li
Li++e-⇌Li
-3.045
Rb+/Rb
Rb++e-⇌Rb
-2.93
K+/K
K++e-⇌K
-2.925
Cs+/Cs
Cs++e-⇌Cs
-2.92
Ba+/Ba
Ba2++2e-⇌Ba
-2,91
Sr2+/Sr
Ca2+/Ca
Na+/Na
HSnO2-+H2O+2e-⇌Sn+3OH-
2H2O+2e-⇌H2+20H-
Ni(OH)2+2e-⇌Ni+2OH-
AsO43-+2H2O+2e-⇌AsO2-+4OH-
SO32-+3H2O+4e-⇌S+6OH-
AsO2-+2H2O+3e-⇌As+4OH-
2SO32-+3H2O+4e-⇌S2O32-+6OH-
-0.403
Ti3+/Ti2+
Ti3++e-⇌Ti2+
-0.37
PbSO4/Pb
PbSO4+2e-⇌Pb+SO42-
-0.356
Co2+/Co
Co2++2e-⇌Co
-0.29
PbCl2/Pb
PbI2+2e-⇌Pb+2I-
-0.266
V3+/V2+
V3++2e-⇌V2+
-0.255
Ni2+/Ni
Ni2++2e-⇌Ni
-0.25
AgI/Ag
AgI+e-⇌Ag+I
-0.152
Sn2+/Sn
Sn2++2e-⇌Sn
-0.136
Pb2+/Pb
Pb2++2e-⇌Pb
-0.126
AgCN/Ag
AgCN+e-⇌Ag+CN-
-0.017
H+/H2
2H++2e-⇌H2
0.0000
AgBr/Ag
AgBr+e-⇌Ag+Br-
0.071
0.96
HNO2/ NO
HNO2+H++e-⇌NO+H2O
0.98
HIO/I-
HIO+H++2e-⇌I-+H2O
0.99
VO2+/VO2+
VO2++2H++e-⇌VO2++H2O
0.999
[AuCl4]-/Au
[AuCl4]-+3e-⇌Au+4Cl-
1.00
NO2/ NO
NO2+2H++2e-⇌NO+H2O
[Co(NH3)6]3+/[Co(NH3)6]2+
Co(OH)3/Co(OH)2
Ag2O/ Ag
O2/OH-
MnO4-/MnO2
BrO3-/Br-
BrO-/Br-
H2O2/OH-
ClO-/Cl-
HXeO63-/HXeO4
HXeO4/Xe
O3/OH-
H2AIO3-+H2O+3e-⇌Al+4OH-
H2BO3-+H2O+3e-⇌B+40H-
H5IO6/ IO3-
H5IO6+H++2e-⇌IO3-+3H2O
1.6
HClO/Cl2
2HClO+2H++2e-⇌Cl2+2H2O
1.63
HClO2/HClO
HClO2+2H++2e-⇌HClO+H2O
1.64
MnO4-/MnO2
MnO4-+4H++3e-⇌MnO2+2H2O
1.68
NiO2/Ni2+
1.03
Br2/Br-
Br2(l)+2e-⇌2Br-
1.065
NO2/HNO2
NO2+H++e-=HNO2
1.07
Br2/Br-
Br2(aq)+2e-⇌2Br-
1.08
Cu2+/[Cu(CN)2]-
Cu2++2CN-+e-⇌[Cu(CN)2]-
1.12
IO3-/HIO
IO3-+5H++4e-⇌HIO+2H2O
La3+/La
Y3+/Y
Mg2+/Mg
Sr2++2e-⇌Sr
Ca2++2e-⇌Ca
Na++e-⇌Na
La3++3e-⇌La
Y3++3e-⇌Y
Mg2++2e-⇌Mg
-2.89
-2.87
-2.714
-2.52
-2.37
-2.37
Ce3+/Ce
Ce3++3e-⇌Ce
-2.33
H2/H-
Sc3+/Sc
Th4+/Th
TiO2+/Ti3+
TiO2++2H++e-⇌Ti3++H2O
0.10
S/H2S
S+2H++2e-⇌H2S(aq)
0.14
Sb2O3/Sb
Sb2O3+6H++6e-⇌2Sb+3H2O
0.15
Sn4+/Sn2+
Sn4++2e-⇌Sn2+
0.154
Cu2+/Cu+
Cu2++e-⇌Cu+
0.17
AgCl/Ag
-1.43
V2+/V
V2++2e-⇌V
-1.2
Mn2+/Mn
Mn2++2e-⇌Mn
-1.17
TiO2/Ti
TiO2+4H++4e-⇌Ti+H2O
-0.86
SiO2/ Si
SiO2+4H++4e-⇌Si+H2O
-0.86
Cr2+/Cr
1.49
Au3+/Au
Au3++3e-⇌Au
1.50
BrO3-/Br2
2BrO3-+12H++10e-⇌Br2+6H2O
1.5
MnO4-/Mn2+
MnO4-+8H++5e-⇌Mn2++4H2O
1.51
HBrO/Br2
2HBrO+2H++2e-⇌Br2+2H2O
1.6
H2+e-⇌H-
Sc3++3e-⇌Sc
Th4++4e-⇌Th
-2.25
-2.1
-1,9
Be+/Be
Be2++2e-⇌Be
-1.85
U3+/U
U3++3e-⇌U
-1.80
Al3+/Al
Al3++3e-⇌Al
-1.66
Ti2+/Ti
Ti2++2e-⇌Ti
-1.63
ZrO2/Zr
ZrO2+4H++4e-⇌Zr+H2O
Mn(OH)2+2e-⇌Mn+20H-
[Zn(CN)4]2-+2e-⇌Zn+4CN-
ZnO22-+2H2O+2e-⇌Zn+4OH-
2SO32-+2H2O+2e-⇌S2O42-+4OH-
[Zn(NH3)4]2++2e-⇌Zn+4NH3
[Sn(OH)6]2-+2e-⇌HSnO2-+30H-+H2O
SO42-+H2O+2e-⇌SO32-+20H-
1.8
S2O82-/ SO42-
S2O82-+2e-⇌2SO42-
2.0
O3/O2
XeF2/Xe
F2/F-
H4XeO6/XeO3
F2/HF
O3+2H++2e-⇌O2+H2O
XeF2+2e-⇌Xe+2F-
F2+2e-⇌2F-
H4XeO6+2H++2e-⇌XeO3+3H2O
F2(g)+2H++2e-⇌2HF
ClO3-+3H++2e-⇌HClO2+H2O
1.21
O2/H2O
O2+4H++4e-⇌2H2O
1.229
MnO2/ Mn2+
MnO2+4H++4e-⇌Mn2++2H2O
1.23
ClO2/ HClO2
ClO2(g)+H++e-⇌HClO2
1.27
Cr2O72-/ Cr3+
Cr2O72-+14H++6e-⇌2Cr3++7H2O
1.33
ClO4-/ Cl2
2ClO4-+16H++14e-⇌Cl2+8H2O
1.34
Cl2/ Cl-
Cl2+2e-⇌2Cl-
1.36
Au3+/Au+
Au3++2e-⇌Au+
1.41
BrO3-/Br-
BrO3-+6H++6e-⇌Br-+3H2O
1.44
HIO/I2
ClO3-/Cl-
PbO2/ Pb2+
Hg2++2e-⇌Hg
0.854
Cu2+/CuI
Cu2++I-+e-⇌CuI
0.86
Hg2+/Hg22+
2Hg2++2e-⇌Hg22+
0.907
Pd2+/Pd
Pd2++2e-⇌Pd
0.92
NO3-/ HNO2
NO3-+3H++2e-⇌HNO2+H2O
0.94
NO3-/ NO
NO3-+4H++3e-⇌NO+2H2O
2HIO+2H++2e-⇌I2+2H2O
ClO3-+6H++6e-⇌Cl-+3H2O
PbO2+4H++2e-⇌Pb2++2H2O
1.45
1.45
1.455
ClO3-/ Cl2
2ClO3-+12H++10e-⇌Cl2+6H2O
1.47
Mn3+/Mn2+
Mn3++e-⇌Mn2+
1.488
HClO/ Cl-
NiO2+4H++2e-⇌Ni2++2H2O
1.68
PbO2/PbSO4
PbO2+SO42-+4H++2e-⇌PbSO4+2H2O
1.69
H2O2/H2O
H2O2+2H++2e-⇌2H2O
1.77
Co3+/Co2+
Co3++e-⇌Co2+
1.80
XeO3/Xe
XeO3+6H++6e-⇌Xe+3H2O
0.69
[PtCl4]2-/Pt
[PtCl4]2-+2e-⇌Pt+4Cl-
0.73
Fe3+/Fe2+
Fe3++e-⇌Fe2+
0.771
Hg22+/Hg
Hg22++2e⇌2Hg
0.792
Ag+/Ag
Ag++e-⇌Ag
0.7999
NO3-/ NO2
NO3-+H++e-⇌NO2+H2O
0.80
Hg2+/Hg
2.07
2.2
2.87
3.0
3.06
2.在碱性溶液中
电对
电极反应
/V
Mg(OH)2/Mg
Mg(OH)2+2e-⇌Mg+2OH-
-2.69
H2AIO3-/Al
H2BO3-/B
Mn(OH)2/Mn
Zn(CN)4]2-/Zn
ZnO22-/Zn
S032-/S2O42-
[Zn(NH3)4]2+/Zn
[Sn(OH)6]2-/HSnO2-
1.14
ClO3-/ ClO2
ClO3-+2H++e-⇌ClO2+H2O
1.15
Ag2O/Ag
ClO4-/ ClO3-
IO3-/I2
Ag2O+2H++2e-⇌2Ag+H2O
ClO4-+2H++2e-⇌ClO3-+H2O
2IO3-+12H++10e-⇌I2+6H2O
1.17
1.19
1.19
ClO3-/ HClO2
S042-/S032-
HSnO2-/Sn
H2O/H2
Ni(OH)2/Ni
AsO43-/AsO2-
S032-/S
AsO2-/As
SO32-/S2O32-
S/S2-
[Ag(CN)2]-/Ag
CrO42-/CrO2-
O2/HO2-
NO3-/NO2-
S4O62-/S2O32-
HgO/Hg
Mn(OH)3/ Mn(OH)2
H2O2+2e-⇌2OH-
CIO-+H2O+2e-⇌CI-+2OH-
HXeO63-+2H2O+e-⇌HXeO4+4OH-
HXeO4+3H2O+7e-⇌Xe+7OH-
O3+H2O+2e-⇌O2+2OH-
-2.35
-1.79
-1.55
-1.26
-1.216
-1.12
-1.04
-0.93
-0.93
-0.91
Cr3++3e-⇌Cr
-0.86
-0.763
-0.74
Ag2S/Ag
Ag2S+2e-⇌Ag+S2-
-0.71
CO2/H2C2O4
Fe2+/Fe
CO2+2H++2e-⇌H2C2O4
Fe2++2e-⇌Fe
-0.49
-0.440
Cr3+/ Cr2+
Cr3++e-⇌Cr2+
-0.41
Cd2+/Cd
Cd2++2e-⇌Cd2
S+2e-⇌S2-
Ag(CN)2]-+e-⇌Ag+2CN-
CrO42-+2H2O+3e-⇌CrO2-+4OH-
O2+H2O+2e-⇌HO2-+OH-
NO3-+H2O+2e-⇌NO2-+20H-
S4O62-+2e-⇌2S2O32-
HgO+H2O+2e-⇌Hg+2OH-
Mn(OH)3+e-⇌Mn(OH)2+OH-
-0.828
-0.72
-0.67
-0.66
-0.66
-0.58
-0.48
-0.31
-0.12
-0.076
0.01
0.09
0.098Leabharlann 0.10.10.17
0.34
0.41
0.588
0.61
0.76
0.88
0.89
0.9
0.9
1.24
VO2+/V3+
VO2++2H++e-⇌V3++H2O
0.34
Cu2+/Cu
Cu2++2e-⇌Cu
0.34
S2O32-/S
S2O32-+6H++4e-⇌2S+3H2O
0.5
Cu+/Cu
Cu++e-⇌Cu
0.52
I3-/I-
I3-+2e-⇌3I-
0.545
I2/I-
I2+2e-⇌2I-
0.535
MnO4-/ MnO42-
[Co(NH3)63+]+e-⇌[Co(NH3)6]2+
Co(OH)3+e-⇌Co(OH)2+OH-
Ag2O+H2O+2e-⇌2Ag+2OH-
O2+2H2O+4e-⇌4OH-
MnO4-+2H2O+3e-⇌MnO2+4OH-
BrO3-+3H2O+6e-⇌Br-+6OH-
BrO-+H2O+2e-⇌Br-+2OH-
附录五标准电极电位(298.15K)
1.在酸性溶液中
电对
电极反应
/V
Li+/Li
Li++e-⇌Li
-3.045
Rb+/Rb
Rb++e-⇌Rb
-2.93
K+/K
K++e-⇌K
-2.925
Cs+/Cs
Cs++e-⇌Cs
-2.92
Ba+/Ba
Ba2++2e-⇌Ba
-2,91
Sr2+/Sr
Ca2+/Ca
Na+/Na
HSnO2-+H2O+2e-⇌Sn+3OH-
2H2O+2e-⇌H2+20H-
Ni(OH)2+2e-⇌Ni+2OH-
AsO43-+2H2O+2e-⇌AsO2-+4OH-
SO32-+3H2O+4e-⇌S+6OH-
AsO2-+2H2O+3e-⇌As+4OH-
2SO32-+3H2O+4e-⇌S2O32-+6OH-
-0.403
Ti3+/Ti2+
Ti3++e-⇌Ti2+
-0.37
PbSO4/Pb
PbSO4+2e-⇌Pb+SO42-
-0.356
Co2+/Co
Co2++2e-⇌Co
-0.29
PbCl2/Pb
PbI2+2e-⇌Pb+2I-
-0.266
V3+/V2+
V3++2e-⇌V2+
-0.255
Ni2+/Ni
Ni2++2e-⇌Ni
-0.25
AgI/Ag
AgI+e-⇌Ag+I
-0.152
Sn2+/Sn
Sn2++2e-⇌Sn
-0.136
Pb2+/Pb
Pb2++2e-⇌Pb
-0.126
AgCN/Ag
AgCN+e-⇌Ag+CN-
-0.017
H+/H2
2H++2e-⇌H2
0.0000
AgBr/Ag
AgBr+e-⇌Ag+Br-
0.071
0.96
HNO2/ NO
HNO2+H++e-⇌NO+H2O
0.98
HIO/I-
HIO+H++2e-⇌I-+H2O
0.99
VO2+/VO2+
VO2++2H++e-⇌VO2++H2O
0.999
[AuCl4]-/Au
[AuCl4]-+3e-⇌Au+4Cl-
1.00
NO2/ NO
NO2+2H++2e-⇌NO+H2O
[Co(NH3)6]3+/[Co(NH3)6]2+
Co(OH)3/Co(OH)2
Ag2O/ Ag
O2/OH-
MnO4-/MnO2
BrO3-/Br-
BrO-/Br-
H2O2/OH-
ClO-/Cl-
HXeO63-/HXeO4
HXeO4/Xe
O3/OH-
H2AIO3-+H2O+3e-⇌Al+4OH-
H2BO3-+H2O+3e-⇌B+40H-
H5IO6/ IO3-
H5IO6+H++2e-⇌IO3-+3H2O
1.6
HClO/Cl2
2HClO+2H++2e-⇌Cl2+2H2O
1.63
HClO2/HClO
HClO2+2H++2e-⇌HClO+H2O
1.64
MnO4-/MnO2
MnO4-+4H++3e-⇌MnO2+2H2O
1.68
NiO2/Ni2+
1.03
Br2/Br-
Br2(l)+2e-⇌2Br-
1.065
NO2/HNO2
NO2+H++e-=HNO2
1.07
Br2/Br-
Br2(aq)+2e-⇌2Br-
1.08
Cu2+/[Cu(CN)2]-
Cu2++2CN-+e-⇌[Cu(CN)2]-
1.12
IO3-/HIO
IO3-+5H++4e-⇌HIO+2H2O
La3+/La
Y3+/Y
Mg2+/Mg
Sr2++2e-⇌Sr
Ca2++2e-⇌Ca
Na++e-⇌Na
La3++3e-⇌La
Y3++3e-⇌Y
Mg2++2e-⇌Mg
-2.89
-2.87
-2.714
-2.52
-2.37
-2.37
Ce3+/Ce
Ce3++3e-⇌Ce
-2.33
H2/H-
Sc3+/Sc
Th4+/Th
TiO2+/Ti3+
TiO2++2H++e-⇌Ti3++H2O
0.10
S/H2S
S+2H++2e-⇌H2S(aq)
0.14
Sb2O3/Sb
Sb2O3+6H++6e-⇌2Sb+3H2O
0.15
Sn4+/Sn2+
Sn4++2e-⇌Sn2+
0.154
Cu2+/Cu+
Cu2++e-⇌Cu+
0.17
AgCl/Ag
-1.43
V2+/V
V2++2e-⇌V
-1.2
Mn2+/Mn
Mn2++2e-⇌Mn
-1.17
TiO2/Ti
TiO2+4H++4e-⇌Ti+H2O
-0.86
SiO2/ Si
SiO2+4H++4e-⇌Si+H2O
-0.86
Cr2+/Cr