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1、.标准电极电势表 标准电极电势可以用来计算化学电池或原电池的电化学势或电极电势。本表中所给出的电极电势以标准氢电极为参比电极，溶液中离子有效浓度为 1mol/L，气体分压为 100kPa，温度为 298K，所有离子的数据都在水溶液中测得。123456789单击每栏上方的符号可将数据按元素符号或标准电极电势值排序。注：(s)固体；(l)液体；(g)气体；(aq)水溶液；(Hg)汞齐。半反应 E(V)注 1 来源 Ba+e Ba(s)4.38 1013 Sr+e Sr(s)4.10 1113 Ca+e Ca(s)3.8 1113 Pr3+e Pr2+3.1 11 N2(g)+H+e HN3(aq)
2、3.09 6 Li+e Li(s)3.0401 5 N2(g)+4H2O+2e 2NH2OH(aq)+2OH 3.04 6 Cs+e Cs(s)3.026 5 Ca(OH)2(s)+2e Ca(s)+2 OH 3.02 11 Rb+e Rb(s)2.98 4 K+e K(s)2.931 5.半反应 E(V)注 1 来源 Mg+e Mg(s)2.93 10 Ba2+2e Ba(s)2.912 5 La(OH)3(s)+3e La(s)+3OH 2.90 5 Fr+e Fr(s)2.9 11 Sr2+2e Sr(s)2.899 5 Sr(OH)2(s)+2e Sr(s)+2OH 2.88 11 C
3、a2+2e Ca(s)2.868 5 Eu2+2e Eu(s)2.812 5 Ra2+2e Ra(s)2.8 5 Yb2+2e Yb(s)2.76 111 Na+e Na(s)2.71 59 Sm2+2e Sm(s)2.68 111 No2+2e No(s)2.50 11 HfO(OH)2(s)+H2O+4e Hf(s)+4OH 2.50 11.半反应 E(V)注 1 来源 Th(OH)4(s)+4e Th(s)+4OH 2.48 11 Md2+2e Md(s)2.40 11 La3+3e La(s)2.379 5 Y3+3e Y(s)2.372 5 Mg2+2e Mg(s)2.372 5 Z
4、rO(OH)2(s)+H2O+4e Zr(s)+4OH 2.36 5 Pr3+3e Pr(s)2.353 11 Ce3+3e Ce(s)2.336 11 Er3+3e Er(s)2.331 11 Ho3+3e Ho(s)2.33 11 Al(OH)4+3e Al(s)+4OH 2.33 Al(OH)3(s)+3e Al(s)+3OH 2.31 Tb3+3e Tb(s)2.28 .半反应 E(V)注 1 来源 H2(g)+2e 2H 2.25 Ac3+3e Ac(s)2.20 Be+e Be(s)2.12 10 Cf2+2e Cf(s)2.12 11 Am3+3e Am(s)2.048 11 C
5、f3+3e Cf(s)1.94 11 Am2+2e Am(s)1.9 11 Be2+2e Be(s)1.85 Rf4+4e Rf(s)1.67 12 U3+3e U(s)1.66 7 Al3+3e Al(s)1.66 9 Ti2+2e Ti(s)1.63 9 Bk2+2e Bk(s)1.6 11.半反应 E(V)注 1 来源 ZrO2(s)+4H+4e Zr(s)+2H2O 1.553 5 Hf4+4e Hf(s)1.55 11 Zr4+4e Zr(s)1.45 5 Ti3+3e Ti(s)1.37 13 TiO(s)+2H+2e Ti(s)+H2O 1.31 Ti2O3(s)+2H+2e 2
6、TiO(s)+H2O 1.23 Zn(OH)42+2e Zn(s)+4OH 1.199 14 Mn2+2e Mn(s)1.185 14 Fe(CN)64+6H+2 e Fe(s)+4HCN(aq)1.16 15 V2+2e V(s)1.175 2 Te(s)+2e Te2 1.143 2 Nb3+3e Nb(s)1.099 Sn(s)+4H+4e SnH4(g)1.07 .半反应 E(V)注 1 来源 In(OH)3(s)+3e In(s)+3OH 0.99 11 SiO2(s)+4H+4e Si(s)+2H2O 0.91 B(OH)3(aq)+3H+3e B(s)+3H2O 0.89 Fe(
7、OH)2(s)+2e Fe(s)+2OH 0.89 15 Fe2O3(s)+3H2O+2e 2Fe(OH)2(s)+2OH 0.86 15 TiO2+2H+4e Ti(s)+H2O 0.86 2H2O+2e H2(g)+2OH 0.8277 5 Bi(s)+3H+3e BiH3 0.8 14 Zn2+2e Zn(Hg)0.7628 5 Zn2+2e Zn(s)0.7618 5 Ta2O5(s)+10H+10e 2Ta(s)+5H2O 0.75 Cr3+3e Cr(s)0.74 Au(CN)2+e Au(s)+2CN 0.60 .半反应 E(V)注 1 来源 Ta3+3e Ta(s)0.6 Pb
8、O(s)+H2O+2e Pb(s)+2OH 0.58 2TiO2(s)+2H+2e Ti2O3(s)+H2O 0.56 Ga3+3e Ga(s)0.53 U4+e U3+0.52 7 H3PO2(aq)+H+e P(白磷16)+2H2O 0.508 5 H3PO3(aq)+2H+2e H3PO2(aq)+H2O 0.499 5 H3PO3(aq)+3H+3e P(红磷)16+3H2O 0.454 5 Fe2+2e Fe(s)0.44 9 2CO2(g)+2H+2e HOOCCOOH(aq)0.43 Cr3+e Cr2+0.42 Cd2+2e Cd(s)0.40 9 SeO32+4e+3H2O
9、Se+6OH 0.37 17.半反应 E(V)注 1 来源 GeO2(s)+2H+2e GeO(s)+H2O 0.37 Cu2O(s)+H2O+2e 2Cu(s)+2OH 0.360 5 PbSO4(s)+2e Pb(s)+SO42 0.3588 5 PbSO4(s)+2e Pb(Hg)+SO42 0.3505 5 Eu3+e Eu2+0.35 7 In3+3e In(s)0.34 2 Tl+e Tl(s)0.34 2 Ge(s)+4H+4e GeH4(g)0.29 Co2+2e Co(s)0.28 5 H3PO4(aq)+2H+2e H3PO3(aq)+H2O 0.276 5 V3+e V2
10、+0.26 9 Ni2+2e Ni(s)0.25 As(s)+3H+3e AsH3(g)0.23 2.半反应 E(V)注 1 来源 AgI(s)+e Ag(s)+I 0.15224 14 MoO2(s)+4H+4e Mo(s)+2H2O 0.15 Si(s)+4H+4e SiH4(g)0.14 Sn2+2e Sn(s)0.13 O2(g)+H+e HO2(aq)0.13 Pb2+2e Pb(s)0.13 9 WO2(s)+4H+4e W(s)+2H2O 0.12 P(红磷)+3H+3e PH3(g)0.111 5 CO2(g)+2H+2e HCOOH(aq)0.11 Se(s)+2H+2e H
11、2Se(g)0.11 CO2(g)+2H+2e CO(g)+H2O 0.11 SnO(s)+2H+2e Sn(s)+H2O 0.10 .半反应 E(V)注 1 来源 SnO2(s)+2H+2e SnO(s)+H2O 0.09 WO3(aq)+6H+6e W(s)+3H2O 0.09 2 P(白磷)+3H+3e PH3(g)0.063 5 Fe3+3e Fe(s)0.04 15 HCOOH(aq)+2H+2e HCHO(aq)+H2O 0.03 2H+2e H2(g)0.00 0 AgBr(s)+e Ag(s)+Br +0.07133 14 S4O62+2e 2S2O32 +0.08 Fe3O4
12、(s)+8H+8e 3Fe(s)+4H2O +0.085 8 N2(g)+2H2O+6H+6e 2NH4OH(aq)+0.092 HgO(s)+H2O+2e Hg(l)+2OH +0.0977 Cu(NH3)42+e Cu(NH3)2+2NH3 +0.10 2 Ru(NH3)63+e Ru(NH3)62+0.10 7.半反应 E(V)注 1 来源 N2H4(aq)+4H2O+2e 2NH4+4OH +0.11 6 H2MoO4(aq)+6H+6e Mo(s)+4H2O +0.11 Ge4+4e Ge(s)+0.12 C(s)+4H+4e CH4(g)+0.13 2 HCHO(aq)+2H+2e
13、 CH3OH(aq)+0.13 S(s)+2H+2e H2S(g)+0.14 Sn4+2e Sn2+0.15 Cu2+e Cu+0.159 2 HSO4+3H+2e SO2(aq)+2H2O +0.16 UO22+e UO2+0.163 7 SO42+4H+2e SO2(aq)+2H2O +0.17 TiO2+2H+e Ti3+H2O +0.19 .半反应 E(V)注 1 来源 Bi3+2e Bi+0.2 SbO+2H+3e Sb(s)+H2O +0.20 AgCl(s)+e Ag(s)+Cl +0.22233 14 H3AsO3(aq)+3H+3e As(s)+3H2O +0.24 GeO(
14、s)+2H+2e Ge(s)+H2O +0.26 UO2+4H+e U4+2H2O +0.273 7 At2+e 2At-+0.3 11 Re3+3e Re(s)+0.300 Bi3+3e Bi(s)+0.32 VO2+2H+e V3+H2O +0.34 Cu2+2e Cu(s)+0.340 2 Fe(CN)63+e Fe(CN)64 +0.36 .半反应 E(V)注 1 来源 Tc2+2e Tc(s)+0.40 11 O2(g)+2H2O+4e 4OH(aq)+0.40 9 H2MoO4+6H+3e Mo3+2H2O +0.43 Ru2+2e Ru(s)+0.455 11 Bi+e Bi(s
15、)+0.50 CH3OH(aq)+2H+2e CH4(g)+H2O +0.50 SO2(aq)+4H+4e S(s)+2H2O +0.50 Cu+e Cu(s)+0.520 2 CO(g)+2H+2e C(s)+H2O +0.52 I3+2e 3I +0.53 9 I2(s)+2e 2I +0.54 9 AuI4+3e Au(s)+4I +0.56 .半反应 E(V)注 1 来源 H3AsO4(aq)+2H+2e H3AsO3(aq)+H2O +0.56 AuI2+e Au(s)+2I +0.58 MnO4+2H2O+3e MnO2(s)+4OH +0.59 Rh+e Rh(s)+0.600
16、11 S2O32+6H+4e 2S(s)+3H2O +0.60 Fc+e Fc(s)+0.641 18 +e Ag+0.643 11 H2MoO4(aq)+2H+2e MoO2(s)+2H2O +0.65 +2H+2e +0.6992 14 O2(g)+2H+2e H2O2(aq)+0.70 Tl3+3e Tl(s)+0.72 .半反应 E(V)注 1 来源 PtCl62+2e PtCl42+2Cl +0.726 7 H2SeO3(aq)+4H+4e Se(s)+3H2O +0.74 Rh3+3e Rh(s)+0.758 11 PtCl42+2e Pt(s)+4Cl +0.758 7 Fe3+
17、e Fe2+0.77 Ag+e Ag(s)+0.7996 5 Hg22+2e 2Hg(l)+0.80 NO3(aq)+2H+e NO2(g)+H2O +0.80 FeO42+5H2O+6e Fe2O3(s)+10 OH +0.81 15 H2(g)+2OH 2H2O+2e +0.828 19 AuBr4+3e Au(s)+4Br +0.85 Hg2+2e Hg(l)+0.85 .半反应 E(V)注 1 来源 MnO4+H+e HMnO4 +0.90 2Hg2+2e Hg22+0.91 2 Pd2+2e Pd(s)+0.915 7 AuCl4+3e Au(s)+4Cl +0.93 MnO2(s)
18、+4H+e Mn3+2H2O +0.95 AuBr2+e Au(s)+2Br +0.96 HXeO63+2H2O+2e+HXeO4+4OH +0.99 20 HNO2+H+e-=NO(g)+H2O +0.996 H6TeO6(aq)+2H+2e TeO2(s)+4H2O +1.02 21 Br2(l)+2e 2Br +1.07 Br2(aq)+2e 2Br +1.09 9 NO2(g)+H+e-=HNO2 +1.093 .半反应 E(V)注 1 来源 IO3+5H+4e HIO(aq)+2H2O +1.13 AuCl2+e Au(s)+2Cl +1.15 HSeO4+3H+2e H2SeO3(
19、aq)+H2O +1.15 Ir3+3e Ir(s)+1.156 11 Ag2O(s)+2H+2e 2Ag(s)+H2O +1.17 ClO3+2H+e ClO2(g)+H2O +1.18 HXeO63+5H2O+8 e Xe(g)+11OH +1.18 20 Pt2+2e Pt(s)+1.188 7 ClO2(g)+H+e HClO2(aq)+1.19 2IO3+12H+10e I2(s)+6H2O +1.20 ClO4+2H+2e ClO3+H2O +1.20 O2(g)+4H+4e 2H2O +1.229 9.半反应 E(V)注 1 来源 MnO2(s)+4H+2e Mn2+2H2O +
20、1.23 HXeO4+3H2O+6 e Xe(g)+7OH +1.24 20 Tl3+2e Tl+1.25 Cr2O72+14H+6e 2Cr3+7H2O +1.33 Cl2(g)+2e 2Cl +1.36 9 CoO2(s)+4H+e Co3+2H2O +1.42 2NH3OH+H+2e N2H5+2H2O +1.42 6 2HIO(aq)+2H+2e I2(s)+2H2O +1.44 Ce4+e Ce3+1.44 BrO3+5H+4e HBrO(aq)+2H2O +1.45 -PbO2(s)+4H+2e Pb2+2H2O +1.460 2-PbO2(s)+4H+2e Pb2+2H2O +1
21、.468 2.半反应 E(V)注 1 来源 2BrO3+12H+10e Br2(l)+6H2O +1.48 2ClO3+12H+10e Cl2(g)+6H2O +1.49 HO2+H+e H2O2 +1.495 11 MnO4+8H+5e Mn2+4H2O +1.51 HO2+H+e H2O2(aq)+1.51 Au3+3e Au(s)+1.52 NiO2(s)+4H+2e Ni2+2OH +1.59 2HClO(aq)+2H+2e Cl2(g)+2H2O +1.63 Ag2O3(s)+6H+4e 2Ag+3H2O +1.67 HClO2(aq)+2H+2e HClO(aq)+H2O +1.6
22、7 Pb4+2e Pb2+1.69 2 MnO4+4H+3e MnO2(s)+2H2O +1.70 .半反应 E(V)注 1 来源 AgO(s)+2H+e Ag+H2O +1.77 H2O2(aq)+2H+2e 2H2O +1.776 Co3+e Co2+1.82 Au+e Au(s)+1.83 2 BrO4+2H+2e BrO3+H2O +1.85 Ag2+e Ag+1.98 2 S2O82+2e 2SO42 +2.07 O3(g)+2H+2e O2(g)+H2O +2.075 7 HMnO4+3H+2e MnO2(s)+2H2O +2.09 XeO3(aq)+6H+6 e Xe(g)+3H2O +2.12 20 H4XeO6(aq)+8H+8 e Xe(g)+6 H2O +2.18 20 FeO42+3e+8H+Fe3+4H2O +2.20 22 XeF2(aq)+2H+2e Xe(g)+2HF(aq)+2.32 20.半反应 E(V)注 1 来源 H4XeO6(aq)+2H+2e XeO3(aq)+H2O +2.42 20 F2(g)+2e 2F +2.87 29 F2(g)+2H+2e 2HF(aq)+3.05 2 Tb4+e Tb3+3.05 11