——标准电极电势表—-
1 在酸性溶液中 (298K)
电对 方程式 Li(I)-(0) Li++e-=Li Cs(I)-(0) Cs++e-=Cs Rb(I)-(0) Rb++e-=Rb K(I)-(0) K++e-=K Ba(II)-(0) Sr(II)-(0) Sr2++2e-=Sr Ca(II)-(0) Ca2++2e-=Ca Na(I)-(0) Na++e-=Na La(III)-(0) La3++3e-=La Mg(II)-(0) E/V
-3。0401
-3。026
-2。98
-2。931
Ba2++2e-=Ba -2。912
-2。89
-2。868
-2。71
-2.379
Mg2++2e-=Mg -2。372
Ce(III)-(0) Ce3++3e-=Ce H(0)-(-I) H2(g)+2e-=2H- Al(III)-(0) AlF63-+3e-=Al+6F- Th(IV)-(0) Be(II)-(0) Be2++2e-=Be U(III)-(0) U3++3e-=U Hf(IV)-(0) 724
Al(III)-(0) Ti(II)-(0) Ti2++2e-=Ti Zr(IV)-(0) 1.553
Si(IV)-(0) [SiF6]2-+4e-=Si+6F- Mn(II)-(0) Mn2++2e-=Mn -2。336
-2.23
-2.069
Th4++4e-=Th -1.899
-1。847
-1.798
HfO2++2H++4e-=Hf+H2O -1。
Al3++3e-=Al -1。662
-1.630
ZrO2+4H++4e-=Zr+2H2O -
-1。24
-1.185
Cr(II)-(0) Cr2++2e-=Cr -0。913
Ti(III)-(II) Ti3++e-=Ti2+ -0。9
B(III)-(0) H3BO3+3H++3e-=B+3H2O -0。8698
*Ti(IV)-(0) TiO2+4H++4e-=Ti+2H2O -0。86
Te(0)-(-II) Te+2H++2e-=H2Te -0。793
Zn(II)-(0) Zn2++2e-=Zn -0.7618
Ta(V)-(0) Ta2O5+10H++10e-=2Ta+5H2O -0。750
Cr(III)-(0) Cr3++3e-=Cr -0.744
Nb(V)-(0)
-0.644
Nb2O5+l0H++10e-=2Nb+5H2O
As(0)-(-III) As+3H++3e-=AsH3 -0.608
U(IV)-(III) U4++e-=U3+ -0。607
Ga(III)-(0) Ga3++3e-=Ga -0。549
P(I)-(0) H3PO2+H++e-=P+2H2O -0。508
P(III)-(I) H3PO3+2H++2e-=H3PO2+H2O -0.499
*C(IV)-(III) 49
Fe(II)-(0) Fe2++2e-=Fe Cr(III)-(II) Cd(II)-(0) Cd2++2e-=Cd Se(0)-(-II) 0.399
Pb(II)-(0) PbI2+2e-=Pb+2I- Eu(III)-(II) Eu3++e-=Eu2+ Pb(II)-(0) In(III)-(0) In3++3e-=In Tl(I)-(0) Tl++e-=Tl Co(II)-(0) Co2++2e-=Co 2CO2+2H++2e-=H2C2O4 -0。
-0.447
Cr3++e-=Cr2+ -0.407
-0。4030
Se+2H++2e-=H2Se(aq) -
-0.365
-0.36
PbSO4+2e-=Pb+SO42- -0.3588
-0。3382
-0.336
-0.28
P(V)-(III)
-0。276
H3PO4+2H++2e-=H3PO3+H2O
Pb(II)-(0) PbCl2+2e-=Pb+2Cl- -0。2675
Ni (II)-(0) Ni2++2e-=Ni -0。257
V(III)-(II) V3++e-=V2+ Ge(IV)-(0) H2GeO3+4H++4e-=Ge+3H2O -0.182
Ag(I)-(0) AgI+e-=Ag+I- -0。15224
Sn(II)-(0) Sn2++2e-=Sn Pb(II)-(0) Pb2++2e-=Pb -0。1262
*C(IV)-(II) CO2(g)+2H++2e-=CO+H2O -0。12
P(0)-(-III) P(white)+3H++3e-=PH3(g) -0。063
Hg(I)-(0) Hg2I2+2e-=2Hg+2I- -0。0405
Fe(III)-(0) Fe3++3e-=Fe -0。037
H(I)-(0) 2H++2e-=H2 0。0000
0.255
0。1375
--
Ag(I)-(0) AgBr+e-=Ag+Br- 0。07133
S(II。V)-(II) S4O62-+2e-=2S2O32- 0。08
*Ti(IV)-(III) TiO2++2H++e-=Ti3++H2O 0。1
S(0)-(-II) S+2H++2e-=H2S(aq) 0。142
Sn(IV)-(II) Sn4++2e-=Sn2+ 0.151
Sb(III)-(0) Sb2O3+6H++6e-=2Sb+3H2O 0。152
Cu(II)-(I) Cu2++e-=Cu+ 0.153
Bi(III)-(0) BiOCl+2H++3e-=Bi+Cl-+H2O 0。1583
S(VI)-(IV) SO42-+4H++2e-=H2SO3+H2O 0。172
Sb(III)-(0) SbO++2H++3e-=Sb+H2O 0。212
Ag(I)-(0) AgCl+e-=Ag+Cl- 0。22233
As(III)-(0) HAsO2+3H++3e-=As+2H2O 0。248
Hg(I)-(0) Hg2Cl2+2e-=2Hg+2Cl-(饱和KCl) 0。26808
Bi(III)-(0) BiO++2H++3e-=Bi+H2O 0.320
U(VI)-(IV) 327
UO22++4H++2e-=U4++2H2O 0。
C(IV)-(III)
0。330
2HCNO+2H++2e-=(CN)2+2H2O
V(IV)-(III) VO2++2H++e-=V3++H2O 0.337
Cu(II)-(0) Cu2++2e-=Cu 0。3419
Re(VII)-(0) ReO4-+8H++7e-=Re+4H2O 0.368
Ag(I)-(0) Ag2CrO4+2e-=2Ag+CrO42- 0.4470
S(IV)-(0) H2SO3+4H++4e-=S+3H2O 0。449
Cu(I)-(0) Cu++e-=Cu 0。521
I(0)-(-I) I2+2e-=2I- 0。5355
I(0)-(-I) I3-+2e-=3I- 0.536
As(V)-(III) H3AsO4+2H++2e-=HAsO2+2H2O 0.560
Sb(V)-(III)
0.581
Sb2O5+6H++4e-=2SbO++3H2O
Te(IV)-(0) TeO2+4H++4e-=Te+2H2O 0。593
U(V)-(IV) UO2++4H++e-=U4++2H2O 0.612
**Hg(II)-(I) 2HgCl2+2e-=Hg2Cl2+2Cl- 0.63
Pt(IV)-(II) [PtCl6]2-+2e-=[PtCl4]2-+2Cl- 0.68
O(0)-(-I) O2+2H++2e-=H2O2 0.695
Pt(II)-(0) [PtCl4]2-+2e-=Pt+4Cl- 0。755
*Se(IV)-(0) H2SeO3+4H++4e-=Se+3H2O 0。
74
Fe(III)-(II) Fe3++e-=Fe2+ 0.771
Hg(I)-(0) Hg22++2e-=2Hg 0。7973
Ag(I)-(0) Ag++e-=Ag 0。7996
Os(VIII)-(0) OsO4+8H++8e-=Os+4H2O 0。8
N(V)-(IV)
0。803
2NO3-+4H++2e-=N2O4+2H2O
Hg(II)-(0) Hg2++2e-=Hg 0。851
Si(IV)-(0) (quartz)SiO2+4H++4e-=Si+2H2O 0。857
Cu(II)-(I) Cu2++I-+e-=CuI 0。86
N(III)-(I) 2HNO2+4H++4e-=H2N2O2+2H2O 0。86
Hg(II)-(I) 2Hg2++2e-=Hg22+ 0。920
N(V)-(III) NO3-+3H++2e-=HNO2+H2O 0。934
Pd(II)-(0) Pd2++2e-=Pd 0。951
N(V)-(II) 957
NO3-+4H++3e-=NO+2H2O 0。
N(III)-(II) HNO2+H++e-=NO+H2O 0。983
I(I)-(-I) HIO+H++2e-=I-+H2O 0。987
V(V)-(IV) VO2++2H++e-=VO2++H2O 0。991
V(V)-(IV) V(OH)4++2H++e-=VO2++3H2O 1.00
Au(III)-(0) [AuCl4]-+3e-=Au+4Cl- 1。002
Te(VI)-(IV)
1。02
H6TeO6+2H++2e-=TeO2+4H2O
N(IV)-(II) N2O4+4H++4e-=2NO+2H2O 1。035
N(IV)-(III) N2O4+2H++2e-=2HNO2 1.065
I(V)-(-I) IO3-+6H++6e-=I-+3H2O 1。085
Br(0)-(-I) Br2(aq)+2e-=2Br- 1.0873
Se(VI)-(IV) SeO42-+4H++2e-=H2SeO3+H2O 1.151
Cl(V)-(IV) ClO3-+2H++e-=ClO2+H2O 1。152
Pt(II)-(0) Pt2++2e-=Pt 1。18
Cl(VII)-(V) 189
ClO4-+2H++2e-=ClO3-+H2O 1。
I(V)-(0) 2IO3-+12H++10e-=I2+6H2O 1.195
Cl(V)-(III) 214
ClO3-+3H++2e-=HClO2+H2O 1。
Mn(IV)-(II)
1。224
MnO2+4H++2e-=Mn2++2H2O
O(0)-(-II) O2+4H++4e-=2H2O 1。229
Tl(III)-(I) T13++2e-=Tl+ 1。252
Cl(IV)-(III) ClO2+H++e-=HClO2 1。277
N(III)-(I) 2HNO2+4H++4e-=N2O+3H2O 1.297
**Cr(VI)-(III) Cr2O72-+14H++6e-=2Cr3++
7H2O 1。33
Br(I)-(-I) HBrO+H++2e-=Br-+H2O 1。331
Cr(VI)-(III)
1。350
HCrO4-+7H++3e-=Cr3++4H2O
Cl(0)-(-I) Cl2(g)+2e-=2Cl- 1。35827
Cl(VII)-(-I) 389
ClO4-+8H++8e-=Cl-+4H2O 1。
Cl(VII)-(0)
1。39
ClO4-+8H++7e-=1/2Cl2+4H2O
Au(III)-(I) Au3++2e-=Au+ 1。401
Br(V)-(-I) BrO3-+6H++6e-=Br-+3H2O 1。423
I(I)-(0) 2HIO+2H++2e-=I2+2H2O 1.439
Cl(V)-(-I)
1.451
ClO3-+6H++6e-=Cl-+3H2O
Pb(IV)-(II)
1.455
PbO2+4H++2e-=Pb2++2H2O
Cl(V)-(0) ClO3-+6H++5e-=1/2Cl2+3H2O 1.47
Cl(I)-(-I) HClO+H++2e-=Cl-+H2O 1.482
Br(V)-(0) BrO3-+6H++5e-=l/2Br2+3H2O 1。482
Au(III)-(0) Au3++3e-=Au 1。498
Mn(VII)-(II)
1.507
MnO4-+8H++5e-=Mn2++4H2O
Mn(III)-(II) Mn3++e-=Mn2+ 1。5415
Cl(III)-(-I) HClO2+3H++4e-=Cl-+2H2O 1。570
Br(I)-(0) HBrO+H++e-=l/2Br2(aq)+H2O 1。574
N(II)-(I) 2NO+2H++2e-=N2O+H2O 1。591
I(VII)-(V) H5IO6+H++2e-=IO3-+3H2O 1.601
Cl(I)-(0) HClO+H++e-=1/2Cl2+H2O 1。611
Cl(III)-(I) HClO2+2H++2e-=HClO+H2O 1.645
Ni(IV)-(II) 678
NiO2+4H++2e-=Ni2++2H2O 1。
Mn(VII)-(IV)
1。679
MnO4-+4H++3e-=MnO2+2H2O
Pb(IV)-(II) PbO2+SO42-+4H++2e-=PbSO4+2H2O 1。6913
Au(I)-(0) Au++e-=Au 1。692
Ce(IV)-(III) Ce4++e-=Ce3+ 1。72
N(I)-(0) N2O+2H++2e-=N2+H2O 1.766
O(-I)-(-II) H2O2+2H++2e-=2H2O 1.776
Co(III)-(II)
1.83
Co3++e-=Co2+(2mol·L-1 H2SO4)
Ag(II)-(I) Ag2++e-=Ag+ 1。980
S(VII)-(VI) S2O82-+2e-=2SO42- 2。010
O(0)-(-II) O3+2H++2e-=O2+H2O 2。076
O(II)-(-II) F2O+2H++4e-=H2O+2F- 2。153
Fe(VI)-(III) FeO42-+8H++3e-=Fe3++4H2O 2。20
O(0)-(-II) O(g)+2H++2e-=H2O 2。421
F(0)-(-I) F2+2e-=2F- 2。866
F2+2H++2e-=2HF 3.053
2 在碱性溶液中 (298K)
电对 方程式 E/V
Ca(II)-(0) Ca(OH)2+2e-=Ca+2OH- -3.02
Ba(II)-(0) Ba(OH)2+2e-=Ba+2OH- -2.99
La(III)-(0) La(OH)3+3e-=La+3OH- -
2.90
Sr(II)-(0) Sr(OH)2·8H2O+2e-=Sr+2OH-+8H2O -2。88
Mg(II)-(0) Mg(OH)2+2e-=Mg+2OH- -2.690
Be(II)-(0) Be2O32-+3H2O+4e-=2Be+6OH--2。63
Hf(IV)-(0) HfO(OH)2+H2O+4e-=Hf+4OH- -2.50
Zr(IV)-(0) H2ZrO3+H2O+4e-=Zr+4OH- 2。36
Al(III)-(0) H2AlO3-+H2O+3e-=Al+OH- -2。33
P(I)-(0) H2PO2-+e-=P+2OH- -1。82
B(III)-(0) H2BO3-+H2O+3e-=B+4OH- -1。79
P(III)-(0) HPO32-+2H2O+3e-=P+5OH- -1。71
-
Si(IV)-(0) SiO32-+3H2O+4e-=Si+6OH- -1。697
P(III)-(I) HPO32-+2H2O+2e-=H2PO2-+3OH- -1.65
Mn(II)-(0) 56
Mn(OH)2+2e-=Mn+2OH- -1。
Cr(III)-(0) 48
Cr(OH)3+3e-=Cr+3OH- -1。
*Zn(II)-(0) [Zn(CN)4]2-+2e-=Zn+4CN-
-1。26
Zn(II)-(0) Zn(OH)2+2e-=Zn+2OH- -1.249
Ga(III)-(0)
-1.219
H2GaO3-+H2O+2e-=Ga+4OH-
Zn(II)-(0) ZnO22-+2H2O+2e-=Zn+4OH- -1。215
Cr(III)-(0) CrO2-+2H2O+3e-=Cr+4OH- -1。2
Te(0)-(-I) Te+2e-=Te2- -1。143
P(V)-(III) PO43-+2H2O+2e-=HPO32-+3OH- -1。05
*Zn(II)-(0)
[Zn(NH3)4]2++2e-=Zn+4NH3 -1。04
*W(VI)-(0) WO42-+4H2O+6e-=W+8OH- -1.01
*Ge(IV)-(0)HGeO-+2HO+4e-=Ge+5OH- -1。0 32
Sn(IV)-(II) +3OH-
-0。93
[Sn(OH)6]2-+2e-=HSnO2-+H2O
S(VI)-(IV)
-0.93
SO42-+H2O+2e-=SO32-+2OH-
Se(0)-(-II) Se+2e-=Se2- -0.924
Sn(II)-(0) HSnO2-+H2O+2e-=Sn+3OH- -0。909
P(0)-(-III) P+3H2O+3e-=PH3(g)+3OH- -0。87
N(V)-(IV)
-0。85
2NO3-+2H2O+2e-=N2O4+4OH-
H(I)-(0) 2H2O+2e-=H2+2OH- -0。8277
Cd(II)-(0) Cd(OH)2+2e-=Cd(Hg)+2OH- -0.809
Co(II)-(0) Co(OH)2+2e-=Co+2OH- -
0.73
Ni(II)-(0) Ni(OH)2+2e-=Ni+2OH- -0。72
As(V)-(III)
-
AsO43-+2H2O+2e-=AsO2-+4OH
-0.71
Ag(I)-(0) Ag2S+2e-=2Ag+S2- -0。691
As(III)-(0) 0。68
AsO2-+2H2O+3e-=As+4OH- -
Sb(III)-(0) 0。66
SbO2-+2H2O+3e-=Sb+4OH- -
*Re(VII)-(IV) ReO4-+2H2O+3e-=ReO2+4OH-
-0。59
*Sb(V)-(III) SbO3-+H2O+2e-=SbO2-+2OH-
-0。59
Re(VII)-(0) ReO4-+4H2O+7e-=Re+8OH- -0。584
*S(IV)-(II) -
2SO32-+3H2O+4e-=S2O32-+6OH
-0.58
Te(IV)-(0) TeO32-+3H2O+4e-=Te+6OH- -0.57
Fe(III)-(II)
-0。56
Fe(OH)3+e-=Fe(OH)2+OH-
S(0)-(-II) S+2e-=S2- -0。47627
Bi(III)-(0) Bi2O3+3H2O+6e-=2Bi+6OH- -0.46
N(III)-(II) NO2-+H2O+e-=NO+2OH- -0.46
*Co(II)-C(0) [Co(NH3)6]2++2e-=Co+6NH3
-0。422
Se(IV)-(0)
-0.366
SeO32-+3H2O+4e-=Se+6OH-
Cu(I)-(0) Cu2O+H2O+2e-=2Cu+2OH- -0。360
Tl(I)-(0) Tl(OH)+e-=Tl+OH- -0。34
*Ag(I)-(0) [Ag(CN)2]-+e-=Ag+2CN- -
0。31
Cu(II)-(0) Cu(OH)2+2e-=Cu+2OH- -0.222
Cr(VI)-(III) 5OH-
-0.13
CrO42-+4H2O+3e-=Cr(OH)3+
*Cu(I)-(0) [Cu(NH3)2]++e-=Cu+2NH3 -0。12
O(0)-(-I) 0.076
O2+H2O+2e-=HO2-+OH- -
Ag(I)-(0) AgCN+e-=Ag+CN- -0。017
N(V)-(III) NO3-+H2O+2e-=NO2-+2OH- 0.01
Se(VI)-(IV)
-
SeO42-+H2O+2e-=SeO32-+2OH
0.05
Pd(II)-(0) Pd(OH)2+2e-=Pd+2OH- 0.07
S(II,V)-(II) S4O62-+2e-=2S2O32- 0.08
Hg(II)-(0) 0977
HgO+H2O+2e-=Hg+2OH- 0。
Co(III)-(II) [Co(NH3)6]3++e-=[Co(NH3)6]2+ 0。108
Pt(II)-(0) Pt(OH)2+2e-=Pt+2OH- 0.14
Co(III)-(II) Co(OH)3+e-=Co(OH)2+OH- 0。17
Pb(IV)-(II) 247
PbO2+H2O+2e-=PbO+2OH- 0。
I(V)-(-I) IO3-+3H2O+6e-=I-+6OH- 0.26
Cl(V)-(III) ClO3-+H2O+2e-=ClO2-+2OH- 0.33
Ag(I)-(0) Ag2O+H2O+2e-=2Ag+2OH- 0.342
Fe(III)-(II) [Fe(CN)6]3-+e-=[Fe(CN)6]4- 0.358
Cl(VII)-(V)
0.36
ClO4-+H2O+2e-=ClO3-+2OH-
*Ag(I)-(0) [Ag(NH3)2]++e-=Ag+2NH0.373 3
O(0)-(-II) O2+2H2O+4e-=4OH- 0。401
I(I)-(-I) IO-+H2O+2e-=I-+2OH- 0。485
*Ni(IV)-(II) -
NiO2+2H2O+2e-=Ni(OH)2+2OH
0。490
Mn(VII)-(VI) MnO4-+e-=MnO42- 0.558
Mn(VII)-(IV)
-
MnO4-+2H2O+3e-=MnO2+4OH
0.595
Mn(VI)-(IV) 4OH-
0.60
MnO42-+2H2O+2e-=MnO2+
Ag(II)-(I) 2AgO+H2O+2e-=Ag2O+2OH- 0。607
Br(V)-(-I) BrO3-+3H2O+6e-=Br-+6OH- 0。61
Cl(V)-(-I) ClO3-+3H2O+6e-=Cl-+6OH- 0。62
Cl(III)-(I) ClO2-+H2O+2e-=ClO-+2OH- 0。66
I(VII)-(V) H3IO62-+2e-=IO3-+3OH- 0。7
Cl(III)-(-I)
0.76
ClO2-+2H2O+4e-=Cl-+4OH-
Br(I)-(-I) BrO-+H2O+2e-=Br-+2OH- 0.761
Cl(I)-(-I) ClO-+H2O+2e-=Cl-+2OH- 0。841
*Cl(IV)-(III) ClO2(g)+e-=ClO2- 0。95
O(0)-(-II) O3+H2O+2e-=O2+2OH- 1。24
摘自David R.Lide, Handbook of Chemistry and Physics, 8-25-8-30, 78th. edition, 1997-1998
* 摘自J.A。 Dean Ed,Lange’s Handbook of Chemistry, 13th。 edition, 1985
** 摘自其他参考书。
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