重点标准电极电势

1、原则电极电势（298K) （在酸性溶液内、 HYPERLINK l 碱性溶液#碱性溶液 在碱性溶液内） HYPERLINK 1.在酸性溶液内电对电极反映H(I)-(0)D(I)-(0)2H+2e-=H22D+2e-=D20.0000-0.044Li(I)-(0)Na(I)-(0)K(I)-(0)Rb(I)-(0)Cs(I)-(0)Li+e-=LiNa+e-=NaK+e-=KRb+e-=RbCs+e-=Cs-3.04012.7109-2.931-2.98-2.923Be()-(0)Mg()-(0)Ca()-(0)Sr()-(0)Ba()-(0)Be2+2e-=BeMg2+2e-=MgCa2+2e

2、-=CaSr2+2e-=SrBa2+2e-=Ba-1.847-2.372-2.86-2.89-2.912*B()-(0)Al()-(0)Ga()-(0)In()-(0)Tl(I)-(0)H3BO3+3H+3e-=B+3H2OAl3+3e-=Al(0.1fNaOH)Ga3+3e-=GaIn3+3e-=InTl+e-=Tl-0.869-1.706-0.560-0.3382-0.3363C()-()C()-()Si()-(0) CO2(g)+2H+2e-=HCOOH2CO2+2H+2e-=H2C2O4SiO2+4H+4e-=Si+2H2-0.199-0.49-0.857 Sn()-(0)Sn()-(

3、0)Sn2+2e-=SnSn4+2e-=Sn2+-0.13790.151Pb()-(0)Pb()-(0)Pb()-(0)Pb()-(0)*Pb()-(0)Pb()-()Pb2+2e-=PbPbCl2+2e-=Pb(Hg)+2Cl-PbSO4+2e-=Pb(Hg)+SO42-PbSO4+2e-=Pb+SO42-PbI2+2e-=Pb(Hg)+2I-PbO2+4H+2e-=Pb2+2H2O-0.1263-0.262-0.3505-0.359-0.3581.455 返回电对电极反映Cu(I)-(0)Cu(I)-0)Cu()-(0)Cu()-(I)*Cu()-(I)Cu+e-=CuCuI+e-=Cu+

4、I-Cu2+2e-=Cu(Hg)Cu2+e-=Cu+2Cu2+2I-+2e-=Cu2I20.522-0.18520.3450.1520.86Ag(I)-(0)Ag(I)-(0)Ag(I)-(0)Ag(I)-(0)Ag+e-=AgAgI+e-=Ag+I-AgCl+e-=Ag+Cl-AgBr+e-=Ag+Br-0.7996-0.15220.22230.0713Au(I)-(0)Au()-(0)Au()-(0)Au()-(I)Au+e-=AuAu3+3e-=AuAuCl4-+3e-=Au+4Cl-Au3+2e-=Au+1.6921.4981.0021.401Zn()-(0)Cd()-(0)Cd()-

5、(0)Hg(I)-(0)Hg(I)-(0)Hg()-(0)Hg()-Hg(I)Zn2+2e-=ZnCd2+2e-=CdCd2+2e-=Cd(Hg)Hg22+2e-=2HgHg22+2e-=2Hg+2I-Hg2+2e-=Hg2Hg2+2e-=Hg22+-0.7618-0.4026-0.35210.7973-0.04050.8510.920La()-(0)Ce()-()U()-(0)U()-()La3+3e-=LaCe4+e-=Ce3+U3+3e-=UU4+e-=U3+-2.5221.61-1.80-0.607Ti()-(0)Ti()-(0)*Ti()-()Zr()-(0)Ti2+2e-=TiTi

6、O2+4H+4e-=Ti+2H2OTi3+e-=Ti2+ZrO2+4H+4e-=Zr+2H2O-1.628-0.86-0.37-1.43V()-()V()-()V()-()V(V)-()V()-()V3+e-=V2+V4+2e-=V2+VO2+2H+e-=V3+H2OV(OH)4+2H+e-=VO2+3H2OVO22+4H+2e-=V4+2H2O-0.255-1.1860.3370.9910.62Cr()-(0)Cr()-()Cr()-()Mo()-(0)Cr3+3e-=CrCr3+e-=Cr2+Cr2O72-+14H+6e-=2Cr3+7H2OMo3+3e-=Mo-0.74-0.411.23

7、-0.20Mn()-(0)Mn()-()Mn()-()Mn()-()Mn()-()Mn2+2e-=MnMnO2+4H+2e-=Mn2+2H2OMnO4-+8H+5e-=Mn2+4H2OMnO4-+4H+3e-=MnO2+2H2OMnO4-+e-=MnO42-1.1851.2281.4911.6790.558Fe()-(0)Fe()-(0)Fe()-()*Fe()-() Fe2+2e-=FeFe3+3e-=FeFe3+e-=Fe2+Fe(CN)63-+e-=Fe(CN)64-(0.01fNaOH)-0.4402-0.0360.7700.55 Co()-(0)Co()-()Co2+2e-=FeCo

8、3+e-=Co2+(3fHNO3)-0.281.842Ni()-(0)Pt()-(0)Pt()-(0)Ni2+2e-=NiPt2+2e-=PtPtCl42-+2e-=Pt+4Cl-0.257约1.20.755返回电对电极反映N(I)-(0)N()-(I)N()-(I)N()-()N()-()N2O+2H+2e-=N2+H2O2NO+2H+2e-=N2O+H2O2HNO2+4H+4e-=N2O+3H2OHNO2+H+e-=N2O+3H2ON2O4+4H+4e-=2NO+2H2O1.771.591.2970.991.035N(V)-()N()-()N(V)-()N(V)-()NO3-+4H+3e-

9、=NO+2H2ON2O4+2H+2e-=2HNO2NO3-+3H+2e-=HNO2+H2O2NO3-+4H+2e-=N2O4+2H2O0.961.070.9340.803*P(I)-(0)P()-(I)P(V)-()H3PO2+H+e-=P+2H2OH3PO23+2H+2e-=H3PO2+2H2OH3PO4+2H+2e-=H3PO3+H2O-0.508-0.499-0.276As(0)-(-)As()-(0)As(V)-()As+3H+3e-=AsH3HAsO2+3H+3e-=As+2H2OH3AsO4+2H+2e-=HAsO3+2H2O(1fHCl)-0.6080.24750.58Sb()-

10、(0)Sb(V)-()Bi()-(0)Sb2O3+6H+6e-=2Sb+3H2OSb2O5+6H+4e-=2SbO+3H2OBiO+2H+3e-=Bi+H2O0.1520.5810.32O(-I)-(-)O(0)-(-)O(0)-(-)O()-(-)O(0)-(-I)H2O2+2H+2e-=2H2OO2+4H+4e-=2H2O1/2O2+2H+(10-7mol.L-1)+2e-=H2OOF2+2H+4e-=H2O+2F-O2+2H+2e-=H2O21.7761.2290.8152.10.692S(0)-(-)S(0)-(-)S()-(0)*S()-()S()-()S+2e-=S2-S+2H+2

11、e-=H2S(aq)H2SO4+4H+4e-=S+3H2OSO42-+4H+2e-=H2SO3+H2OS2O82-+2e-=2SO42-0.4760.1410.450.1722.0Se(0)-(-)Se()-(0)Se()-()Se+2H+2e-=H2Se(aq)H2SeO3+4H+4e-=Se+3H2OSeO42-+4H+2e-=H2SeO3+H2O-0.3990.741.151 返回电对电极反映F(0)-(-I)F(0)-(-I)F2+2e-=2F-F2(g)+2H+2e-=2HF(aq)2.873.03Cl(0)-(-I)Cl(I)-(-I)Cl()-(-I)Cl2(g)+2e-=2Cl

12、-HClO+H+2e-=Cl-+2H2OHClO2+3H+4e-=Cl-+2H2O1.35831.491.56Cl(V)-(-I)Cl(I)-(0)Cl(V)-(0)ClO3-+6H+6e-=Cl-+3H2OHClO+H+e-=1/2Cl2+H2OClO3-+6H+5e-=1/2Cl2+3H2O1.451.631.47Cl()-(0)Cl()-(I)ClO4-+8H+7e-=1/2Cl2+4H2OHClO2+2H+2e-=HClO+H2O1.391.645Cl(V)-()Cl()-(V)ClO3-+3H+2e-=HClO2+3H2OClO4-+8H+7e-=ClO3-+H2O1.211.19B

13、r(0)-(-I)Br(0)-(-I)Br(I)-(-I)Br(V)-(-I)Br2(l)+2e-=2Br-Br2(aq)+2e-=2Br-HBrO+H+2e-=Br-+H2OBrO3-+6H+6e-=Br-+3H2O1.0851.0871.331.44Br(I)-(0)Br(V)-(0)HBrO+H+e-=1/2Br2(l)+H2OBrO3-+6H+6e-=Br-+3H2O1.601.48I(0)-(-I)I(I)-(-I)I(v)-(-I）I(I)-(0)I(V)-(0)I()-(V)I2+2e-=2I-HIO+H+2e-=I-+H2OIO3-+6H+6e-=I-+3H2OHIO+H+e-

14、=1/2I2+2H2OIO3-+6H+5e-=1/2I2+3H2OH5IO6+H+2e-=IO3-+3H2O0.5350.991.0851.451.195约1.7 返回2 .在碱性溶液内电对电极反映Cu(I)-(0)Cu(I)-(0)Cu(I)-(0)Cu(NH3)2+e-=Cu+2NH3Cu2O+H2O+2e-=2Cu+2OH-Cu(CN)32-+e-=Cu+3CN-0.12-0.361(-1.10)Ag(I)-(0)Ag(I)-(0)Ag(I)-(0)AgCN+e-=Ag+CN-Ag(CN)2-+e-=Ag+2CN-Ag2S+2e-=2Ag+S2-0.02-0.31-0.7051Zn()-

15、(0)*Zn()-(0)*Zn()-(0)Zn()-(0)Cd()-(0)Hg()-(0)Zn(OH)42+2e-=Zn+4OH-Zn(CN)22-+2e-=Zn+4CN-Zn(NH3)42+2e-=Zn+4NH3ZnO22-+2H2O+2e-=Zn+4OH-Cd(OH)2+2e-=Cd(Hg)+2OH-HgO+H2O+2e-=Hg+2OH-1.245-1.26-1.04-1.2160.0810.0984La()-(0)Lu()-(0)La(OH)3+3e-=La+3OH-Lu(OH)3+3e-=Lu+3OH-2.90 -2.72U()-(0)U()-(0)U()-()U()-()U(OH)3

16、+3e-=U+3OH-UO2+2H2O+4e-=U+4OH-U(OH)4+e-=U(OH)3+OH-Na2UO4+4H2O+2e-=U(OH)4+2Na+4OH-2.17-2.39-2.2 -1.61Cr()-(0)Cr()-(0)Cr()-()CrO2-+2H2O+3e-=Cr+4OH-Cr(OH)3+3e-=Cr+3OH-CrO42-+4H2O+3e-=Cr(OH)3+5OH-1.2-1.48-0.12Mn()-()Mn()-()Mn()-(0)MnO4-+2H2O+3e-=MnO2+4OH-MnO2+2H2O+2e-=Mn(OH)2+2OH-Mn(OH)2+2e-=Mn+2OH-0.59

17、5-0.05-1.56Fe()-()Co()-()Co()-()Co()-(0)Fe(OH)3+e-=Fe(OH)2+OH-Co(NH3)63+e-=Co(NH3)62+Co(OH)3+e-=Co(OH)2+OH-Co(OH)3+2e-=Co+2OH-0.560.1080.17-0.73Ni()-(0)Pt()-(0)Ni(OH)2+2e-=Ni+2OH-Pt(OH)2+2e-=Pt+2OH-0.720.14 返回电对电极反映H(I)-(0)2H2O+2e-=H2+2OH-0.8277Be()-(0)Mg()-(0)Ca()-(0)Sr()-(0)Ba()-(0)Be2O32-+3H2O+4e

18、-=2Be+6OH-Mg(OH)2+2e-=Mg+2OH-Ca(OH)2+2e-=Ca+2OH-Sr(OH)2.8H2O+2e-=Sr+2OH-+8H2OBa(OH)2.8H2O+2e-=Ba+2OH-+8H2O-2.63-2.69-3.02-2.99-2.97B()-(0)Al()-(0)H2BO3-+H2O+3e-=B+4OH-H2AlO3-+H2O+3e-=Al+4OH- -2.5 -2.35Si()-(0)Ge()-(0)Sn()-(0)Sn()-()Pb()-()SiO32-+3H2O+4e-=Si+6OH-H2GeO3+4H+4e-=Ge+3H2OH2SnO2-+H2O+2e-=S

19、n+3OH-Sn(OH)63-+2e-=HSnO3-+H2O+3OH-PbO2+H2O+2e-=PbO+2OH-1.69 -0.18-0.909-0.930.247N(V)-()N(V)-()NO3-+H2O+2e-=NO3-+2OH-2NO3-+2H2O+2e-=N2O4+4OH-0.01-0.85P(V)-()P(0)-(-)PO43-+2H2O+2e-=N2O4+4OH-P+3H2O+3e-=PH3(g)+3OH-1.05-0.87As()-(0)As(V)-()AsO2-+2H2O+3e-=As+4OH-AsO42-+2H2O+2e-=AsO2-+4OH-0.68-0.71Sb()-(0)Bi()-(0)SbO3-+2H2O+2e-=Sb+4OH-Bi2O3+3H2O+6e-=2Bi+6OH-0.66-0.46O(0)-()O2+2H2O+4e-=4OH-0.401S()-()S()-()S()-()S(0)-(-)S4O62-+2e-=2S2O32-2SO32-+3H2O+4e-=S2O32-+6OH-SO42-+H2O+2e-=SO32-+2OH-S+2e-=S2-0.09-0.58-