Szereg elektrochemiczny pierwiastków

 

Reakcja połówkowa  (V) Ref.
Utleniacz is in equilibrium with Reduktor
Sr+ + e is in equilibrium with Sr −4.10 [1]
Ca+ + e is in equilibrium with Ca −3.8 [1]
Pr3+ + e is in equilibrium with Pr2+ −3.1 [1]
3N2(g) + 2H+ + 2e is in equilibrium with 2HN3(aq) −3.09 [2][3]
Li+ + e is in equilibrium with Li(s) −3.0401 [3][4]
N2(g) + 4H2O + 2e is in equilibrium with 2NH2OH(aq) + 2OH −3.04 [2]
Cs+ + e is in equilibrium with Cs(s) −3.026 [3]
Ca(OH)2 + 2e is in equilibrium with Ca + 2 OH −3.02 [1]
Er3+ + e is in equilibrium with Er2+ −3.0 [1]
Ba(OH)2 + 2e is in equilibrium with Ba + 2 OH −2.99 [1]
Rb+ + e is in equilibrium with Rb(s) −2.98 [3]
K+ + e is in equilibrium with K(s) −2.931 [3]
Ba2+ + 2e is in equilibrium with Ba(s) −2.912 [3]
La(OH)3(s) + 3e is in equilibrium with La(s) + 3OH −2.90 [3]
Fr+ + e is in equilibrium with Fr −2.9 [1]
Sr2+ + 2e is in equilibrium with Sr(s) −2.899 [3]
Sr(OH)2 + 2e is in equilibrium with Sr + 2 OH −2.88 [1]
Ca2+ + 2e is in equilibrium with Ca(s) −2.868 [3]
Eu2+ + 2e is in equilibrium with Eu(s) −2.812 [3]
Ra2+ + 2e is in equilibrium with Ra(s) −2.8 [3]
Ho3+ + e is in equilibrium with Ho2+ −2.8 [1]
Bk3+ + e is in equilibrium with Bk2+ −2.8 [1]
Yb2+ + 2e is in equilibrium with Yb −2.76 [1]
Na+ + e is in equilibrium with Na(s) −2.71 [3][5]
Mg+ + e is in equilibrium with Mg −2.70 [1]
Nd3+ + e is in equilibrium with Nd2+ −2.7 [1]
Mg(OH)2 + 2e is in equilibrium with Mg + 2 OH −2.690 [1]
Sm2+ + 2e is in equilibrium with Sm −2.68 [1]
Be2O32− + 3 H2O + 4e is in equilibrium with 2 Be + 6 OH −2.63 [1]
Pm3+ + e is in equilibrium with Pm2+ −2.6 [1]
Dy3+ + e is in equilibrium with Dy2+ −2.6 [1]
No2+ + 2e is in equilibrium with No −2.50 [1]
HfO(OH)2 + H2O + 4e is in equilibrium with Hf + 4 OH −2.50 [1]
Th(OH)4 + 4e is in equilibrium with Th + 4 OH −2.48 [1]
Md2+ + 2e is in equilibrium with Md −2.40 [1]
Tm2+ + 2e is in equilibrium with Tm −2.4 [1]
La3+ + 3e is in equilibrium with La(s) −2.379 [3]
Y3+ + 3e is in equilibrium with Y(s) −2.372 [3]
Mg2+ + 2e is in equilibrium with Mg(s) −2.372 [3]
ZrO(OH)2(s) + H2O + 4e is in equilibrium with Zr(s) + 4OH −2.36 [3]
Pr3+ + 3e is in equilibrium with Pr −2.353 [1]
Ce3+ + 3e is in equilibrium with Ce −2.336 [1]
Er3+ + 3e is in equilibrium with Er −2.331 [1]
Ho3+ + 3e is in equilibrium with Ho −2.33 [1]
H2AlO3 + H2O + 3e is in equilibrium with Al + 4 OH −2.33 [1]
Nd3+ + 3e is in equilibrium with Nd −2.323 [1]
Tm3+ + 3e is in equilibrium with Tm −2.319 [1]
Al(OH)3(s) + 3e is in equilibrium with Al(s) + 3OH −2.31  
Sm3+ + 3e is in equilibrium with Sm −2.304 [1]
Fm2+ + 2e is in equilibrium with Fm −2.30 [1]
Am3+ + e is in equilibrium with Am2+ −2.3 [1]
Dy3+ + 3e is in equilibrium with Dy −2.295 [1]
Lu3+ + 3e is in equilibrium with Lu −2.28 [1]
Tb3+ + 3e is in equilibrium with Tb −2.28 [1]
Gd3+ + 3e is in equilibrium with Gd −2.279 [1]
H2 + 2e is in equilibrium with 2H −2.23 [1]
Es2+ + 2e is in equilibrium with Es −2.23 [1]
Pm2+ + 2e is in equilibrium with Pm −2.2 [1]
Tm3+ + e is in equilibrium with Tm2+ −2.2 [1]
Dy2+ + 2e is in equilibrium with Dy −2.2 [1]
Ac3+ + 3e is in equilibrium with Ac −2.20 [1]
Yb3+ + 3e is in equilibrium with Yb −2.19 [1]
Cf2+ + 2e is in equilibrium with Cf −2.12 [1]
Nd2+ + 2e is in equilibrium with Nd −2.1 [1]
Ho2+ + 2e is in equilibrium with Ho −2.1 [1]
Sc3+ + 3e is in equilibrium with Sc(s) −2.077 [6]
AlF63− + 3e is in equilibrium with Al + 6 F −2.069 [1]
Am3+ + 3e is in equilibrium with Am −2.048 [1]
Cm3+ + 3e is in equilibrium with Cm −2.04 [1]
Pu3+ + 3e is in equilibrium with Pu −2.031 [1]
Pr2+ + 2e is in equilibrium with Pr −2.0 [1]
Er2+ + 2e is in equilibrium with Er −2.0 [1]
Eu3+ + 3e is in equilibrium with Eu −1.991 [1]
Lr3+ + 3e is in equilibrium with Lr −1.96 [1]
Cf3+ + 3e is in equilibrium with Cf −1.94 [1]
Es3+ + 3e is in equilibrium with Es −1.91 [1]
Pa4+ + e is in equilibrium with Pa3+ −1.9 [1]
Am2+ + 2e is in equilibrium with Am −1.9 [1]
Th4+ + 4e is in equilibrium with Th −1.899 [1]
Fm3+ + 3e is in equilibrium with Fm −1.89 [1]
Np3+ + 3e is in equilibrium with Np −1.856 [1]
Be2+ + 2e is in equilibrium with Be −1.847 [1]
H2PO2 + e is in equilibrium with P + 2 OH −1.82 [1]
U3+ + 3e is in equilibrium with U −1.798 [1]
Sr2+ + 2e is in equilibrium with Sr/Hg −1.793 [1]
H2BO3 + H2O + 3e is in equilibrium with B + 4 OH −1.79 [1]
ThO2 + 4H+ + 4e is in equilibrium with Th + 2 H2O −1.789 [1]
HfO2+ + 2 H+ + 4e is in equilibrium with Hf + H2O −1.724 [1]
HPO32− + 2 H2O + 3e is in equilibrium with P + 5 OH −1.71 [1]
SiO32− + H2O + 4e is in equilibrium with Si + 6 OH −1.697 [1]
Al3+ + 3e is in equilibrium with Al(s) −1.662 [1]
Ti2+ + 2e is in equilibrium with Ti(s) −1.63 [5]
ZrO2(s) + 4H+ + 4e is in equilibrium with Zr(s) + 2H2O −1.553 [7]
Zr4+ + 4e is in equilibrium with Zr(s) −1.45 [7]
Ti3+ + 3e is in equilibrium with Ti(s) −1.37 [8]
TiO(s) + 2H+ + 2e is in equilibrium with Ti(s) + H2O −1.31  
Ti2O3(s) + 2H+ + 2e is in equilibrium with 2TiO(s) + H2O −1.23  
Zn(OH)42− + 2e is in equilibrium with Zn(s) + 4OH −1.199 [7]
Mn2+ + 2e is in equilibrium with Mn(s) −1.185 [7]
Fe(CN)64− + 6H+ + 2 e is in equilibrium with Fe(s) + 6HCN(aq) −1.16 [9]
Te(s) + 2e is in equilibrium with Te2− −1.143 [10]
V2+ + 2e is in equilibrium with V(s) −1.13 [10]
Nb3+ + 3e is in equilibrium with Nb(s) −1.099  
Sn(s) + 4H+ + 4e is in equilibrium with SnH4(g) −1.07  
SiO2(s) + 4H+ + 4e is in equilibrium with Si(s) + 2H2O −0.91  
B(OH)3(aq) + 3H+ + 3e is in equilibrium with B(s) + 3H2O −0.89  
Fe(OH)2(s) + 2e is in equilibrium with Fe(s) + 2OH −0.89 [9]
Fe2O3(s) + 3H2O + 2e is in equilibrium with 2Fe(OH)2(s) + 2OH −0.86 [9]
TiO2+ + 2H+ + 4e is in equilibrium with Ti(s) + H2O −0.86  
2H2O + 2e is in equilibrium with H2(g) + 2OH −0.8277 [7]
Bi(s) + 3H+ + 3e is in equilibrium with BiH3 −0.8 [7]
Zn2+ + 2e is in equilibrium with Zn(Hg) −0.7628 [7]
Zn2+ + 2e is in equilibrium with Zn(s) −0.7618 [7]
Ta2O5(s) + 10H+ + 10e is in equilibrium with 2Ta(s) + 5H2O −0.75  
Cr3+ + 3e is in equilibrium with Cr(s) −0.74  
Ag2S(s) + 2e is in equilibrium with 2Ag(s) + S2-(aq) −0.69  
[Au(CN)2] + e is in equilibrium with Au(s) + 2CN −0.60  
Ta3+ + 3e is in equilibrium with Ta(s) −0.6  
PbO(s) + H2O + 2e is in equilibrium with Pb(s) + 2OH −0.58  
2TiO2(s) + 2H+ + 2e is in equilibrium with Ti2O3(s) + H2O −0.56  
Ga3+ + 3e is in equilibrium with Ga(s) −0.53  
U4+ + e is in equilibrium with U3+ −0.52 [11]
H3PO2(aq) + H+ + e is in equilibrium with P(white)[note 1] + 2H2O −0.508 [7]
H3PO3(aq) + 2H+ + 2e is in equilibrium with H3PO2(aq) + H2O −0.499 [7]
H3PO3(aq) + 3H+ + 3e is in equilibrium with P(red)[note 1] + 3H2O −0.454 [7]
Fe2+ + 2e is in equilibrium with Fe(s) −0.44 [5]
2CO2(g) + 2H+ + 2e is in equilibrium with HOOCCOOH(aq) −0.43  
Cr3+ + e is in equilibrium with Cr2+ −0.42  
Cd2+ + 2e is in equilibrium with Cd(s) −0.40 [5]
GeO2(s) + 2H+ + 2e is in equilibrium with GeO(s) + H2O −0.37  
Cu2O(s) + H2O + 2e is in equilibrium with 2Cu(s) + 2OH −0.360 [7]
PbSO4(s) + 2e is in equilibrium with Pb(s) + SO42− −0.3588 [7]
PbSO4(s) + 2e is in equilibrium with Pb(Hg) + SO42− −0.3505 [7]
Eu3+ + e is in equilibrium with Eu2+ −0.35 [11]
In3+ + 3e is in equilibrium with In(s) −0.34 [10]
Tl+ + e is in equilibrium with Tl(s) −0.34 [10]
Ge(s) + 4H+ + 4e is in equilibrium with GeH4(g) −0.29  
Co2+ + 2e is in equilibrium with Co(s) −0.28 [7]
H3PO4(aq) + 2H+ + 2e is in equilibrium with H3PO3(aq) + H2O −0.276 [7]
V3+ + e is in equilibrium with V2+ −0.26 [5]
Ni2+ + 2e is in equilibrium with Ni(s) −0.25  
As(s) + 3H+ + 3e is in equilibrium with AsH3(g) −0.23 [10]
AgI(s) + e is in equilibrium with Ag(s) + I −0.15224 [7]
MoO2(s) + 4H+ + 4e is in equilibrium with Mo(s) + 2H2O −0.15  
Si(s) + 4H+ + 4e is in equilibrium with SiH4(g) −0.14  
Sn2+ + 2e is in equilibrium with Sn(s) −0.13  
O2(g) + H+ + e is in equilibrium with HO2•(aq) −0.13  
Pb2+ + 2e is in equilibrium with Pb(s) −0.126 [5]
WO2(s) + 4H+ + 4e is in equilibrium with W(s) + 2H2O −0.12  
P(red) + 3H+ + 3e is in equilibrium with PH3(g) −0.111 [7]
CO2(g) + 2H+ + 2e is in equilibrium with HCOOH(aq) −0.11  
Se(s) + 2H+ + 2e is in equilibrium with H2Se(g) −0.11  
CO2(g) + 2H+ + 2e is in equilibrium with CO(g) + H2O −0.11  
SnO(s) + 2H+ + 2e is in equilibrium with Sn(s) + H2O −0.10  
SnO2(s) + 4H+ + 4e is in equilibrium with SnO(s) + 2H2O −0.09  
WO3(aq) + 6H+ + 6e is in equilibrium with W(s) + 3H2O −0.09 [10]
P(white) + 3H+ + 3e is in equilibrium with PH3(g) −0.063 [7]
Fe3+ + 3e is in equilibrium with Fe(s) −0.04 [9]
HCOOH(aq) + 2H+ + 2e is in equilibrium with HCHO(aq) + H2O −0.03  
2H+ + 2e is in equilibrium with H2(g) 0.0000 = 0
AgBr(s) + e is in equilibrium with Ag(s) + Br +0.07133 [7]
S4O62− + 2e is in equilibrium with 2S2O32− +0.08  
Fe3O4(s) + 8H+ + 8e is in equilibrium with 3Fe(s) + 4H2O +0.085 [12]
N2(g) + 2H2O + 6H+ + 6e is in equilibrium with 2NH4OH(aq) +0.092  
HgO(s) + H2O + 2e is in equilibrium with Hg(l) + 2OH +0.0977  
Cu(NH3)42+ + e is in equilibrium with Cu(NH3)2+ + 2NH3 +0.10 [10]
Ru(NH3)63+ + e is in equilibrium with Ru(NH3)62+ +0.10 [11]
N2H4(aq) + 4H2O + 2e is in equilibrium with 2NH4+ + 4OH +0.11 [2]
H2MoO4(aq) + 6H+ + 6e is in equilibrium with Mo(s) + 4H2O +0.11  
Ge4+ + 4e is in equilibrium with Ge(s) +0.12  
C(s) + 4H+ + 4e is in equilibrium with CH4(g) +0.13 [10]
HCHO(aq) + 2H+ + 2e is in equilibrium with CH3OH(aq) +0.13  
S(s) + 2H+ + 2e is in equilibrium with H2S(g) +0.14  
Sn4+ + 2e is in equilibrium with Sn2+ +0.15  
Cu2+ + e is in equilibrium with Cu+ +0.159 [10]
HSO4 + 3H+ + 2e is in equilibrium with SO2(aq) + 2H2O +0.16  
UO22+ + e is in equilibrium with UO2+ +0.163 [11]
SO42− + 4H+ + 2e is in equilibrium with SO2(aq) + 2H2O +0.17  
TiO2+ + 2H+ + e is in equilibrium with Ti3+ + H2O +0.19  
SbO+ + 2H+ + 3e is in equilibrium with Sb(s) + H2O +0.20  
AgCl(s) + e is in equilibrium with Ag(s) + Cl +0.22233 [7]
H3AsO3(aq) + 3H+ + 3e is in equilibrium with As(s) + 3H2O +0.24  
GeO(s) + 2H+ + 2e is in equilibrium with Ge(s) + H2O +0.26  
UO2+ + 4H+ + e is in equilibrium with U4+ + 2H2O +0.273 [11]
Re3+ + 3e is in equilibrium with Re(s) +0.300  
Bi3+ + 3e is in equilibrium with Bi(s) +0.308 [7]
VO2+ + 2H+ + e is in equilibrium with V3+ + H2O +0.34  
Cu2+ + 2e is in equilibrium with Cu(s) +0.337 [10]
[Fe(CN)6]3− + e is in equilibrium with [Fe(CN)6]4− +0.36  
Fc+ + e is in equilibrium with Fc(s) +0.4 [13]
O2(g) + 2H2O + 4e is in equilibrium with 4OH(aq) +0.401 [5]
H2MoO4 + 6H+ + 3e is in equilibrium with Mo3+ + 2H2O +0.43  
CH3OH(aq) + 2H+ + 2e is in equilibrium with CH4(g) + H2O +0.50  
SO2(aq) + 4H+ + 4e is in equilibrium with S(s) + 2H2O +0.50  
Cu+ + e is in equilibrium with Cu(s) +0.520 [10]
CO(g) + 2H+ + 2e is in equilibrium with C(s) + H2O +0.52  
I3 + 2e is in equilibrium with 3I +0.53 [5]
I2(s) + 2e is in equilibrium with 2I +0.54 [5]
[AuI4] + 3e is in equilibrium with Au(s) + 4I +0.56  
H3AsO4(aq) + 2H+ + 2e is in equilibrium with H3AsO3(aq) + H2O +0.56  
[AuI2] + e is in equilibrium with Au(s) + 2I +0.58  
MnO4 + 2H2O + 3e is in equilibrium with MnO2(s) + 4OH +0.59  
S2O32 + 6H+ + 4e is in equilibrium with 2S(s) + 3H2O +0.60  
H2MoO4(aq) + 2H+ + 2e is in equilibrium with MoO2(s) + 2H2O +0.65  
1,4-Benzochinon.svg + 2H+ + 2e is in equilibrium with Hydrochinon2.svg +0.6992 [7]
O2(g) + 2H+ + 2e is in equilibrium with H2O2(aq) +0.70  
Tl3+ + 3e is in equilibrium with Tl(s) +0.72  
PtCl62− + 2e is in equilibrium with PtCl42− + 2Cl +0.726 [11]
H2SeO3(aq) + 4H+ + 4e is in equilibrium with Se(s) + 3H2O +0.74  
PtCl42− + 2e is in equilibrium with Pt(s) + 4Cl +0.758 [11]
Fe3+ + e is in equilibrium with Fe2+ +0.77  
Ag+ + e is in equilibrium with Ag(s) +0.7996 [7]
Hg22+ + 2e is in equilibrium with 2Hg(l) +0.80  
NO3(aq) + 2H+ + e is in equilibrium with NO2(g) + H2O +0.80  
2FeO42− + 5H2O + 6e is in equilibrium with Fe2O3(s) + 10 OH +0.81 [9]
[AuBr4] + 3e is in equilibrium with Au(s) + 4Br +0.85  
Hg2+ + 2e is in equilibrium with Hg(l) +0.85  
[IrCl6]2− + e is in equilibrium with [IrCl6]3− +0.87 [4]
MnO4 + H+ + e is in equilibrium with HMnO4 +0.90  
2Hg2+ + 2e is in equilibrium with Hg22+ +0.91 [10]
Pd2+ + 2e is in equilibrium with Pd(s) +0.915 [11]
[AuCl4] + 3e is in equilibrium with Au(s) + 4Cl +0.93  
MnO2(s) + 4H+ + e is in equilibrium with Mn3+ + 2H2O +0.95  
NO3(aq) + 4H+ + 3e is in equilibrium with NO(g) + 2H2O(l) +0.958  
[AuBr2] + e is in equilibrium with Au(s) + 2Br +0.96  
[HXeO6]3− + 2H2O + 2e + is in equilibrium with [HXeO4] + 4OH +0.99 [14]
[VO2]+(aq) + 2H+ + e is in equilibrium with [VO]2+(aq) + H2O +1.0 [15]
H6TeO6(aq) + 2H+ + 2e is in equilibrium with TeO2(s) + 4H2O +1.02 [15]
Br2(l) + 2e is in equilibrium with 2Br +1.066 [7]
Br2(aq) + 2e is in equilibrium with 2Br +1.0873 [7]
IO3 + 5H+ + 4e is in equilibrium with HIO(aq) + 2H2O +1.13  
[AuCl2] + e is in equilibrium with Au(s) + 2Cl +1.15  
HSeO4 + 3H+ + 2e is in equilibrium with H2SeO3(aq) + H2O +1.15  
Ag2O(s) + 2H+ + 2e is in equilibrium with 2Ag(s) + H2O +1.17  
ClO3 + 2H+ + e is in equilibrium with ClO2(g) + H2O +1.18  
[HXeO6]3− + 5H2O + 8 e is in equilibrium with Xe(g) + 11OH +1.18 [14]
Pt2+ + 2e is in equilibrium with Pt(s) +1.188 [11]
ClO2(g) + H+ + e is in equilibrium with HClO2(aq) +1.19  
2IO3 + 12H+ + 10e is in equilibrium with I2(s) + 6H2O +1.20  
ClO4 + 2H+ + 2e is in equilibrium with ClO3 + H2O +1.20  
O2(g) + 4H+ + 4e is in equilibrium with 2H2O +1.229 [5]
MnO2(s) + 4H+ + 2e is in equilibrium with Mn2+ + 2H2O +1.23  
[HXeO4] + 3H2O + 6 e is in equilibrium with Xe(g) + 7OH +1.24 [14]
Tl3+ + 2e is in equilibrium with Tl+ +1.25  
Cr2O72− + 14H+ + 6e is in equilibrium with 2Cr3+ + 7H2O +1.33  
Cl2(g) + 2e is in equilibrium with 2Cl +1.36 [5]
CoO2(s) + 4H+ + e is in equilibrium with Co3+ + 2H2O +1.42  
2NH3OH+ + H+ + 2e is in equilibrium with N2H5+ + 2H2O +1.42 [2]
2HIO(aq) + 2H+ + 2e is in equilibrium with I2(s) + 2H2O +1.44  
BrO3 + 5H+ + 4e is in equilibrium with HBrO(aq) + 2H2O +1.45  
ß-PbO2(s) + 4H+ + 2e is in equilibrium with Pb2+ + 2H2O +1.460 [10]
a-PbO2(s) + 4H+ + 2e is in equilibrium with Pb2+ + 2H2O +1.468 [10]
2BrO3 + 12H+ + 10e is in equilibrium with Br2(l) + 6H2O +1.48  
2ClO3 + 12H+ + 10e is in equilibrium with Cl2(g) + 6H2O +1.49  
HClO(aq) + H+ + 2e is in equilibrium with Cl(aq) + H2O +1.49 [1]
MnO4 + 8H+ + 5e is in equilibrium with Mn2+ + 4H2O +1.51  
HO2 + H+ + e is in equilibrium with H2O2(aq) +1.51  
Au3+ + 3e is in equilibrium with Au(s) +1.52  
NiO2(s) + 4H+ + 2e is in equilibrium with Ni2+ + 2OH +1.59  
Ce4+ + e is in equilibrium with Ce3+ +1.61  
2HClO(aq) + 2H+ + 2e is in equilibrium with Cl2(g) + 2H2O +1.63  
Ag2O3(s) + 6H+ + 4e is in equilibrium with 2Ag+ + 3H2O +1.67  
HClO2(aq) + 2H+ + 2e is in equilibrium with HClO(aq) + H2O +1.67  
Pb4+ + 2e is in equilibrium with Pb2+ +1.69 [10]
MnO4 + 4H+ + 3e is in equilibrium with MnO2(s) + 2H2O +1.70  
AgO(s) + 2H+ + e is in equilibrium with Ag+ + H2O +1.77  
H2O2(aq) + 2H+ + 2e is in equilibrium with 2H2O +1.78  
Co3+ + e is in equilibrium with Co2+ +1.82  
Au+ + e is in equilibrium with Au(s) +1.83 [10]
BrO4 + 2H+ + 2e is in equilibrium with BrO3 + H2O +1.85  
Ag2+ + e is in equilibrium with Ag+ +1.98 [10]
S2O82− + 2e is in equilibrium with 2SO42− +2.010 [7]
O3(g) + 2H+ + 2e is in equilibrium with O2(g) + H2O +2.075 [11]
HMnO4 + 3H+ + 2e is in equilibrium with MnO2(s) + 2H2O +2.09  
XeO3(aq) + 6H+ + 6 e is in equilibrium with Xe(g) + 3H2O +2.12 [14]
H4XeO6(aq) + 8H+ + 8 e is in equilibrium with Xe(g) + 6 H2O +2.18 [14]
FeO42− + 3e + 8H+ is in equilibrium with Fe3+ + 4H2O +2.20 [16]
XeF2(aq) + 2H+ + 2e is in equilibrium with Xe(g) + 2HF(aq) +2.32 [14]
H4XeO6(aq) + 2H+ + 2e is in equilibrium with XeO3(aq) + H2O +2.42 [14]
F2(g) + 2e is in equilibrium with 2F +2.87 [4][5][10]
F2(g) + 2H+ + 2e is in equilibrium with 2HF(aq) +3.05 [10]
KrF2(aq) + 2e is in equilibrium with Kr(g) + 2F(aq) +3.27 [17]

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