一些半反应的标准电极电势

1、一些半反响的标准电极电势附表5 一些半反响的标准电极电势(298.15K)1. 在酸性溶液中电极反响Ag2+(aq) + e- Ag+(aq)AgBs) + e- Ag(s) + Br - (aq)AgCl(s) + e- Ag(s) + Cl - (aq)AgI(s) + e- Ag(s) + I (aq)Ag -2CrO4(aq) + 2e 2Ag(s) + CrO24 (aq) *Al Al3+(aq) + 3e Al(s)As HAsO 2(aq) + 3H+(aq) + 3e As(s) + 2H2O(l)H3AsO4(aq) + 2H+(aq) + 2e- HAsO2(aq) +

2、2H2O(l) *Au Au3+(aq) + 3e- Au(s)Au3+(aq) + 2e- Au+(aq)AuCl-4 (aq) + 3e- Au(s) + 4Cl -(aq)Ba Ba2+(aq) + 2e- Ba(s)Br Br2(l) + 2e- 2Br -(aq)2BrO3- (aq) + 12H+(aq) + 10e- Br2(l) + 6H2O(l)C 2CO2(g) + 2H+(aq) + 2e- H2C2O4(aq)Ca Ca2+(aq) + 2e- Ca(s)Cd Cd2+(aq) + 2e- Cd(s)ClO3- (aq) + 6H+(aq) + 6e- Cl -(aq)

3、 + 3H2O(l)2CIO3- (aq) + 12H+(aq) + 10e- Cl2(g) + 6H2O(l) *CIO-4(aq) + 2H+(aq) + 2e- ClO3 - (aq) + H2O(l)2HClO(aq) + 2H+(aq) + 2e- Cl2(g) + 2H2O(l) *Co Co2+(aq) + 2e- Co(s)Co3+(aq) + e-一 Co2+(aq) *Cr Cr2+(aq) + 2e- C心)Cr3+(aq) + e-一 Cr2+(aq)Cr2O2-7(aq) + 14H+(aq) + 6e- 2Cr3+(aq) + 7H2O(l)Cs Cs+(aq) +

4、 e- Cs(s)Cu Cu+(aq) + e- Cu(s)Cu2+(aq) + e- - Cu+(aq)Cu2+(aq) + 2e- Cu(s)Cu2+(aq) + I -(aq) + e- C uI(s)1.98 0.071 0.222 -0.152 0.447 -1.676 0.240 0.560 1.52 1.36 1.002 -2.92 1.065 1.478 -0.49 -2.84 -0.403 1.358 1.450 1.47 1.189 1.611 -0.277 1.92 -0.90 -0.424 1.33 -2.923 0.52 0.159 0.34 0.86F F2(g)

5、+ 2e- 2F -(aq)OF2 (g) + 2H+(aq) + 4e- H2O(l) + 2F -(aq)Fe Fe2+(aq) + 2e- Fe(s)Fe3+(aq) + e- 一 Fe2+(aq)Fe(CN)3- 6(aq) + e- Fe(CN)4 - 6(aq)H 2H+(aq) + 2e- H2(g)2Hg2+(aq)+ 2e- Hg2+2(aq) *2HgCl2(aq) + 2e- Hg2Cl2(s) + 2Cl -(aq)Hg2Cl2(s) + 2e- 2Hg(l) + 2Cl -(aq)I I2(s) + 2e- 2I -(aq)I3- (aq) + 2e- 3I -(aq

6、)2IO3- (aq) + 12H+(aq) + 10e- I2(s) + 6H2O(l)In In3+(aq) + 3e- In(s)K K+(aq) + e- K(s)La La3+(aq) + 3e- La(s)Li Li+(aq) + e- - Li(s)Mg Mg2+(aq) + 2e- Mg(s)Mn Mn2+(aq) + 2e- Mn(s)MnO2(s) + 4H+(aq) + 2e- Mn2+(aq) + 2H2O(l)MnO- 4(aq) + 8H+(aq)+5e-Mn2+(aq)+ 4H2O(l)MnO4- (aq) + 4H+(aq)+3e-MnO2(s)+ 2H2O(l

7、)MnO4- (aq) + e- - MnO24 (aq)N NO3- (aq) + 4H+(aq) + 3e- NO(g) + 2H2O(l) NO3 - (aq) + 3H+(aq) + 2e-一HNO2(aq) + H2O(l) *2NO3- (aq) + 4H+(aq) + 2e- N2O4(aq) + 2H2O(l) *Na Na+(aq) + e- - Na(s)Ni Ni2+(aq) + 2e- Ni(s)O O2(g) + 2H+(aq) + 2e- H2O2(aq)O2(g) + 4H+(aq) + 4e- 2H2O(l)H3PO3(aq) + H2O(l)P H3PO4(a

8、q) + 2H+(aq) + 2e-Pb Pb2+(aq) + 2e- Pb(s)PbO2(s)+SO2-4(aq)+4H+(aq)+2e- PbSO4(s)+2H2O(l)PbO2(s) + 4H+(aq) + 2e- Pb2+(aq) + 2H2O(l)2.866 2.1 -0.44 0.771 0.361 0.000 0.854 0.7973 0.920 0.63 0.2676 0.535 0.536 1.20 -0.338 -2.924 -2.38 -3.04 -2.356 -1.18 1.23 1.51 1.70 0.56 0.956 0.934 0.803 -2.713 -0.25

9、7 0.695 1.229 2.075 1.763 -0.276 -0.125 1.69 1.455RbSSnSrTiUVZn 44Rb+(aq) + e- Rb(s) S(s) + 2H+(aq) + 2e - H2S(g) H2SO3(aq) + 4H+(aq) + 4e- S(s) + 3H2O(l) * +-SO2-4 (a q) + 4H(aq) + 2e SO2(g) +2H2O(l) +-SO2- 4 (aq) + 4H(aq) + 2e H2SO3(aq) + H2O(l) *-2-S2O2-8(aq) + 2e2SO4(aq) + - S2O2- 8(aq) + 2H(aq)

10、+ 2e 2HSO4(aq) *-2.924 0.144 0.449 0.170.172 2.01 2.123 -0.137 0.154 -2.89 -1.630 -1.66 1.00 0.337 -0.763 Sn2+(aq) + 2e- - Sn(s) Sn4+(aq) + 2e - Sn2+(aq) Sr2+(aq) + 2e- - S®) Ti2+(aq) + 2e一Ti(s) U3+(aq) + 3e - U(s) +VO2(aq) + 2H+(aq) + e- VO2+(aq) + H2O(l)VO2+(aq) + 2H+(aq) + e- V3+(aq) + H2O(l

11、) Zn2+(aq) + 2e - Zn(s)2. 在碱性溶液中AgAlAsBrCaClCr电 极反响 2AgO(s) + H2O(l) + 2e- Ag2O(s) + 2OH -(aq) Ag2O(s) + H2O(l)+ 2e- 2Ag(s) + 2OH -(aq) Al(OH)4- (aq) + 3e- Al(s) + 4OH -(aq)-H2AlO3(aq) + H2O(l) + 3e-Al(s) + 4OH -(aq) * E /V 0.604 0.342 -2.31 -2.33-1.21 -0.68 -0.67 0.766 0.584 -3.02 0.890 0.622 0.33

12、0.36 -1.48 As(s) + 3H2O(l)+ 3e- AsH3(g) + 3OH -(aq) - AsO2(aq) + 2H2O(l) + 3e- As(s) + 4OH -(aq)-AsO3- 4(aq) + 2H2O(l) + 2e AsO2(aq) + 4OH (aq) BrO -(aq) + H2O(l) + 2e-Br - (aq) + 2OH -(aq) - BrO3(aq) + 3H2O(l) + 6e- Br - (aq) + 6OH -(aq)Ca(OH)2(s) + 2e- Ca(s) + 2OH-(aq) ClO - (aq)+ H2O(l) + 2e- Cl

13、- (aq)+2OH -(aq) - ClO3(aq) + 3H2O(l) + 6e- Cl -(aq) + 6OH -(aq) - - ClO3(aq) +H2O(l) + 2e- ClO2(aq) + 2OH-(aq) * - ClO4-(aq) + H2O(l) + 2e-ClO3(aq)+ 2OH -(aq) * Cr(OH)3(s) + 3e- Cs) + 3OH-(aq) *CuFeHHgIMgMnNOPbSSbZn 423-0.360 -0.8914 -0.56 -0.8277 0.0977 0.485 0.42 0.26 -2.69 -1.560.595 0.60 0.01 0

14、.401 1.246 -0.54 -0.455 -0.93 -0.571 -0.66 -1.246 Cu2O(s) +H2O(l) + 2e- 2Cu(s) + 2OH -(aq) * Fe(OH)2(s) + 2e- Fe(s) + 2OH - (aq)Fe(OH)3(s) + e- Fe(OH)2(s) + OH -(aq) * 2H2O(l) + 2e- H2(g) + 2OH -(aq)HgO(s) + H2O(l) + 2e- Hg(s) + 2OH -(aq) * IO-(aq) + H2O(l) + 2e- I -(aq)+ 2OH -(aq) * 2IO-(aq) + 2H2O

15、(l) + 2e- I2(s) + 4OH -(aq) - IO3(aq) + 3H2O(l)+ 6e- I -(aq) + 6OH -(aq) * Mg(OH)2(s) + 2e- Mg(s) + 2OH -(aq) *Mn(OH)2(s) + 2e- Mn(s) + 2OH -(aq) * -MnO4(aq) + 2H2O(l) + 3e- MnO2(s) +4OH -(aq) -MnO2- 4 (aq) + 2H2O(l) + 2e MnO2(s) + 4OH (aq) *- - NO3(aq) +H2O(l) + 2e- NO2(aq) + 2OH -(aq) O2(g) + 2H2O

16、(l) + 4e- 4OH -(aq) O3(g) +H2O(l) + 2e- O2(g) + 2OH -(aq) - HPbO2(aq) + H2O(l) + 2e- Pb(s) + 3OH -(aq) S(s) + 2e- S2 -(aq) * -2-SO2-4 (aq) + H2O(l) + 2e SO3(aq) + 2OH (aq)* -2-2SO2- 3(aq) + 3H2O(l) + 4e S2O3(aq) + 6OH (aq) *- SbO2(aq) + 2H2O(l)+ 3e- Sb(s) + 4OH -(aq) * Zn(OH)2(s) + 2e- Zn(s) + 2OH -(aq)数据摘自 Petrucci, R. H., Harwood, W. S., Herring, F. G. general Chemistry: Principles and Modern Applications. 8 ed. 2002.* 数据摘自 CRC Handbook of Chemistry and Physics, 82 ed. 20012002.氢 2.1 锂 0.98