Standard electrode potential(data page)From Wikipedia, the free encyclopedia(Redirected from Table of standard electrode potentials)Jump to:navigation,searchMain article:standard electrode potentialThe values of standard electrode potentials are given in the table below in volts relative to the standard hydrogen electrode and are for the following conditions:A temperature of 298.15 K (25°C);An effective concentration of 1 mol/L for each aqueous species ora species in a mercury amalgam;A partial pressure of 101.325kPa (absolute) (1atm, 1.01325bar )for each gaseous reagent. This pressure is used because mostliterature data are still given for this value rather than for thecurrent standard of 100 kPa.An activity of unity for each pure solid,pure liquid,or for water (solvent).Legend: (s)–solid;(l)–liquid;g–gas;aq–aqueous (default( )( )for all charged species); (Hg–amalgam. )Half-reaction E° (V) [note 1]Ref.322g+e-3aq- 3.09??N( )+?H +?HN()Li++e-Li(s)- 3.0401 ?2g2e-2aq-- 3.04N()+4 ?HO+2?2?NHOH()+2 ?OH+e-Cs(s)- 3.026Cs +?+e-Rb(s)- 2.98Rb +?[1][2][2][1][2] [2]Half-reaction+e - K( s ) K + ?Ba 2++ 2 e -Ba(s)3 s) + 3e -La( s) + 3-La(OH) ( ??OHSr 2++ 2 ?e -Sr( s) 2++ 2? e -Ca( s)Ca2++ 2e -Eu(s) Eu2++ 2? e -Ra( s)RaNa ++ ?e -Na(s)3++ 3? e -Sc( s)ScLa 3++ 3 ?e -La( s)3+e -Y( s ) Y +3?2+e -Mg(s)Mg + 22 s ) + 2 e - Zr( s) + 4 -ZrO(OH) ( ?HO + 4??OHAl(OH) 4 -e -Al(s-+ 3 ?)+4 ?OHAl(OH) 3( s) + 3e -Al( s) + 3 -??OH2g) + 2? e --H(2?H3++ 3 ? e -Ac( s ) AcBe 2+ + 2 e - Be(s)U 3++ 3 ?e -U(s)3++ 3? e -Al( s)AlE ° (V)- 2.931- 2.912- 2.90- 2.899- 2.868- 2.812 - 2.8- 2.71- 2.077- 2.379- 2.372- 2.372- 2.36- 2.33- 2.31- 2.25- 2.20- 1.85- 1.66- 1.66Ref.[2][2][2][2][2][2][2][2][3][4][2][2][2][2][5][3]Half-reactionTi 2+ + 2 ? e -Ti( s )2 s ) + 4 +e -Zr( s2 ZrO ( ?H+4?)+2 ?HOZr 4+ + 4 ? e -Zr( s )Ti 3++ 3 ?e -Ti( s)TiO( s) + 2 +e -Ti( s) +2?H+2 ??H O2 3s ) + 2 +e - 2?TiO( s ) + 2 Ti O( ?H+2 ? ?H O 4 2- - s -eZn( ) + 4 ?OHZn(OH) + 2 ?2+ Mn(s)Mn + 2 ?e -6 4-+e - s aqFe(CN)+6 ?H+2Fe( ) + 6HCN( ? )Te( s) + 2 ?e -Te 2-2+e -V( s)V +2?Nb 3+ + 3 ?e -Nb(s)Sn( s ) + 4 +e -4g?H+4?SnH( )2 s) + 4 +e -Si( s2 SiO ( ?H+4?)+2 ?HO3aq+e -B( s) + 32B(OH) () + 3 ?H+3??HO2s) + 2e -Fe( s ) + 2 - Fe(OH) ( ??OH2 3s) + 3 2e -2s) + 2 -Fe O( ?HO + 2?2Fe(OH) ( ?OHTiO 2+ + 2 ?H + + 4 ?e - Ti( s) + ?H 2O-H 2( g) + 2 - 2??H 2O + 2 ?e ?OHBi ( s ) + 3 +e - BiH 3?H+3?E ° (V)- 1.63- 1.553- 1.45- 1.37- 1.31- 1.23- 1.199- 1.185- 1.16- 1.143- 1.13- 1.099- 1.07- 0.91- 0.89- 0.89- 0.86- 0.86- 0.8277 - 0.8Ref.[3][6][6][7][6][6][8][9][9][8][8][6][6]Half-reaction[note 1]E ° (V)2++ 2 ? e -Zn( Hg- 0.7628 Zn) Zn 2++ 2 e -Zn( s)- 0.76182 5s)+10+e -2?Ta( s) + 5 2- 0.75 Ta O( ?H+10 ??H OCr 3+ + 3 ?e -Cr( s)- 0.742-+ ? e -Au( s-- 0.60 [Au(CN) ])+2 ?CN3++ 3 e -Ta( s)- 0.6 Tas 2 e -Pb( s ) + 2 -- 0.58PbO( ) + ?HO + 2??OH2s) + 2 +e -2 3s) +2- 0.56 2?TiO ( ?H+2?Ti O(?HO 3+? e - s - 0.53 Ga + 3 Ga( )U 4++ e -U3+- 0.5232aq+e - P( white ) [note 2] 2- 0.508 HPO( ) +?H + ? +2 ?HOH 3PO 3( aq) + 2 H ++ 2 ?e -H 3 PO 2( aq) + ?H 2O- 0.4993 3 aq ) + 3 + e - P( red ) [note 2] 2- 0.454 HPO( ?H+3 ? +3 ?HO2+ + 2 ? e - Fe( s )- 0.44 Fe2 g ) + 2 +e - HOOCCOOH( aq - 0.43 2?CO( ?H+2? )Cr 3++e -Cr 2+- 0.42 ?2+ + 2 ? e -Cd( s )- 0.40 CdGeO 2( s) + 2 ?H + + 2 ?e - GeO(s) + ?H 2O- 0.37Cu 2O( s) +-2?Cu(s) + 2-- 0.360 ?H 2O + 2 ?e ?OH4 s) + 2 e -Pb( s)+SO2-- 0.35884PbSO( ?Ref.[6][6][5][6][6][6][3][3][6][6]Half-reaction[note 1] E° (V)4s e-Pb(Hg42-- 0.3505PbSO()+2 ?)+SOEu3+ +e-Eu2+- 0.35 In3++ 3 ?e-In(s)- 0.34 Tl + +?e-Tl( s)- 0.34Ge(s) + 4+e-4g- 0.29 ?H+4?GeH()2++ 2 ?e-Co(s)- 0.28 Co34aq) + 2+e-33aq2- 0.276HPO(?H+2 ?H PO() +?H OV3+ +e-V2+- 0.26 Ni2++ 2 ?e-Ni(s)- 0.25As(s) + 3+e-3g- 0.23 ?H+3?AsH()AgI(s) +e-Ag(s) + I-- 0.15224 ?MoO2( s) + 4H+ + 4 ?e-Mo(s) + 2 ?H2O- 0.15Si (s) + 4+e-4(g- 0.14 ?H+4?SiH)2++ 2 ?e-Sn(s)- 0.13Sn2g+e-2aq- 0.13O()+ ?H+?HO?()2++ 2 ?e-Pb(s)- 0.13Pb2s) + 4+e-W(s) + 22- 0.12WO(?H+4??HOP( red ) + 3H+ + 3 ?e-PH3( g)- 0.111 CO2( g) + 2?H+ + 2 ?e-HCOOH(aq)- 0.11Se(s) + 2+e-2g- 0.11?H+2?H Se()Ref.[6][5][9][9][6][6][3][9][6][3][6]Half-reaction2g+e -g 2 CO ()+2 ?H+2 ?CO( ) + ?HOSnO( s ) + 2 +e - Sn( s ) + 2?H+2 ??H O2s) + 2+e -s2SnO( ?H+2?SnO( ) + ?HO3 aq + e -s 2 WO( )+6 ?H+6 ?W()+3 ?HOP( white+e -3g)+3 ?H+3 ?PH( )3+Fe( s) Fe + 3 ?e -HCOOH( aq +e -aq2) + 2 ?H+2 ?HCHO( ) +?H O+e -2g 2?H+2 ?H ( )AgBr( s ) + ? e -Ag( s ) + Br-S O 2- + 2 ? - 2?S O 2 - 4 6e 2 33 4 s ) + 8 +e - 3?Fe( s 2Fe O( ?H+8 ?)+4 ?HON 2( g) + 2 ?H 2 O + 6 ?H + + 6 ?e -2?NH 4OH( aq)HgO( s ) + 2e - Hg( l) + 2 -?HO + 2??OH3 4 2+ + e -3 2 +3Cu(NH) ? Cu(NH) +2 ?NH3 6 3++e -3 6 2+Ru(NH) ?Ru(NH)2 4aq 2e -4+-NH ( ) + 4 ?HO + 2?2?NH + 4 ?OH24 aq+e - s 2 HMoO( ) + 6 ?H+6 ?Mo( ) + 4 ?H OGe 4+ + 4 ?e - Ge(s)C( s) + 4+-CH( g)H + 4 e4HCHO( aq +e -3aq)+2 ?H+2 ?CHOH( )E ° (V)- 0.11- 0.10- 0.09- 0.09- 0.063- 0.04- 0.030.0000+0.07133+0.08+0.085+0.092+0.0977+0.10+0.10+0.11+0.11+0.12+0.13+0.13Ref.[9][6][8]≡ 0[6][10][9][5][1][9]Half-reaction S( s +e -2g)+2 ?H+2 ?H S( )Sn 4+ + 2 ?e -Sn 2+2+e -+Cu + ?Cu- +-aq4e 22HSO +3 ?H+2 ?SO()+2 ?HO2+ e - +2 2UO+? UO2-+-aq4e2 2 SO +4 ?H+2?SO( )+2 ?HO TiO 2++e -Ti 3+2+2 ?H+ ?+ ?HO++e -Sb( s ) + 2SbO + 2 ?H + 3 ? ?HOAgCl( s ) + e - Ag( s ) + Cl -?3 3 aq + e - As( s ) + 3 2H AsO( ) + 3 ?H+3 ? ?H Os+e -s2GeO( ) + 2 ?H+2 ?Ge( ) + ?H O++4+UO 2 + 4 ?H + ?e -U +2 ?H 2O3++ 3 ? e -Re( s) ReBi 3+ + 3 ? e -Bi( s )2+ +e -3+ 2VO+2 ?H+ ?V + ?H O2++ 2 ? e -Cu( s) Cu63--64 -[Fe(CN)+ e[Fe(CN) ]] ?O 2( g) + 2--?H 2 O + 4 ?e 4?OH( aq)+-3+H 2MoO+ 6 ?H + 3 ?eMo + 2 ?H O423 aq +e - 4 g) +2CH OH( )+2 ?H+2 ?CH( ?H OE ° (V)+0.14+0.15+0.159 +0.16 +0.163 +0.17 +0.19 +0.20 +0.22233+0.24 +0.26 +0.273 +0.300 +0.308 +0.34 +0.340 +0.36 +0.40 +0.43+0.50Ref.[9][5][6][5][6][9][3]Half-reaction[note 1]E ° (V) 2 aq + e - S( s ) + 2 2+0.50 SO ( )+4 ?H +4 ??HO Cu ++ e -Cu(s)+0.520 CO( g + e - C( s 2+0.52 ) + 2 ?H+2 ? )+ ?HO-+ 2 ?e -3?I - +0.53 I 32 s) + 2 ?e - 2?I - +0.54I ([AuI4 -e -Au(s) + 4?I -+0.56 ] + 3 ?34aq+e -33aq2+0.56 H AsO() + 2 ?H+2 ?H AsO() + ?H O[AuI2 -+e -Au( s)+2 ?I-+0.58 ] ?4 -2e -2s-+0.59MnO + 2 ?H O + 3 ?MnO()+4 ?OH2?-+-s2 3+6?H+4?e2?S( ) + 3 2+0.60 S O?H OFc + +? e -Fc( s )+0.641H 2MoO 4( aq) + 2 ?H + + 2 ?e - MoO 2( s) + 2 ?H 2O+0.65Ref.[9][3][3][11]+ 2 ?H + + 2 ?e -2 g +e -22aqO( )+2 ?H+2 ??HO( )3++ 3 ?e -Tl( s)Tl2 --2--PtCl 6ePtCl 4+ 2 ?Cl+ 2 ?2 3 aq + e - Se(s ) + 3 2H SeO( )+4 ?H+4 ??H O2 --s-PtCl 4ePt( ) + 4 ?Cl+ 2 ?3++ ? e - 2+ FeFe+0.6992+0.70+0.72 +0.726 +0.74 +0.758+0.77[6][5][5]Half-reaction+?e -Ag( s )Ag +2++ 2 ? e - 2?Hg( l)2Hg3 -aq+e -2 g2NO( )+2 ?H+ ?NO( )+ ?HO2 -- s-42 e2 3)+10?OH2FeO+5 ?HO+6?Fe O( [AuBr 4 ] -e - Au( s) + 4?Br -+ 3 ?2++ 2 ?e -Hg(l )Hg4- + - -?H + e4MnO + ? HMnO2+e - 2+2?Hg + 2 ?2Hg2+ e - Pd( s )Pd + 2 ?[AuCl 4 ] - + 3 ?e - Au(s) + 4 ?Cl -2 s+e -3+2MnO( )+4 ?H+?Mn + 2 ?HO[AuBr 2] - + ?e -Au(s) + 2 ?Br -[HXeO] 3- +2 ?HO+2?-+[HXeO] --+ 4 ??OH6 2e 466 aq+e -2s ) + 4 2HTeO( ) + 2 ?H+2 ?TeO( ?HO2 l) + 2e -2?Br -Br ( ?2aq e -2?Br -Br ( ) + 2 ?IO 3-+ e -HIO( aq2+5?H+4?) + 2 ?HO[AuCl 2] - + ?e - Au(s) + 2 ?Cl -- + -H 2SeO( aq) +?HO HSeO + 3 ?H + 2 ?e4322 s+e -2?Ag( s) +2Ag O( ) + 2 ?H+2??HOE ° (V)+0.7996+0.80 +0.80 +0.81 +0.85 +0.85 +0.90 +0.91 +0.915 +0.93+0.95 +0.96+0.99 +1.02 +1.066 +1.0873 +1.13 +1.15+1.15+1.17Ref.[6][8][9][5][12][13][6][6]Half-reaction3 -+e -2g 2ClO +2?H+ ?ClO ( ) + ?H O3--g -62? e[HXeO] +5 ?HO+8Xe( ) + 11 ?OHPt 2+ e -Pt( s ) + 2 ?2 g+e -2aqClO ( ) + ?H + ? HClO( ) - + - 2 s 2 2 ?IO 3+12 ?H+10 ? eI ( )+6 ?HO4- +e -3- + 2ClO +2?H+2?ClO ?HO2g) + 4+e -2O( ?H+4 ?2?HO2s+e -2+2MnO()+4 ?H+2 ?Mn + 2 ?HO4 -2e -g-[HXeO] +3 ?HO+6 ?Xe( ) + 7 ?OHTl 3+ + 2 ?e -Tl +2 7 2-+e -2?Cr 3+2Cr O +14 ?H+6 ?+7 ?HOCl 2( g) + 2 e -2?Cl -2 s+e -3+2CoO( )+4 ?H+?Co + 2 ?HO++e -+32 522?NHO?H + ?H+2 ?NH +2 ?HO 2 ?HIO( aq+e - I 2 ( s ) + 2 2) + 2 ?H+2 ??HO4+? e -3+Ce +Ce3-+e -aq 2BrO +5?H+4?HBrO( )+2 ?HOβ-PbO 2( s) + 4 ?H ++ 2 ?e -Pb 2++ 2 ?H 2O α-PbO 2( s) + 4 H ++ 2 ?e -Pb 2++ 2 ?H 2O3 -+e -2 l) + 6 22 ?BrO +12 ?H+10 ?Br ( ?H OE ° (V)+1.18+1.18 +1.188 +1.19 +1.20 +1.20 +1.229 +1.23 +1.24 +1.25+1.33 +1.36+1.42 +1.42 +1.44 +1.44 +1.45 +1.460+1.468+1.48Ref.[12][5][3][12][3][1][9][9]Half-reaction-+-2g 22ClO 3e+12 ?H+10 ?Cl ( )+6 ?H O4 -+e -2+2 MnO + 8 ?H + 5 ?Mn + 4 ?HO2 ?+ +e -2 2aqHO ?H+ ??HO( )Au 3+ + 3 ?e -Au(s)2s ) + 4 +e - Ni 2+-NiO ( ?H+2?+2 ?OHaq +e -2( g22 ?HClO( ) + 2 ?H+2?Cl ) + 2 ?HO2 3s) + 6 +e -+2Ag O( ?H+4 ?2?Ag + 3 ?HO2aq + e - aq ) + 2HClO ( ) + 2 ?H + 2 ? HClO( ?HO4+ e - 2+Pb + 2 ? Pb4 - +e -2 s 2MnO + 4 ?H + 3 ?MnO( )+2 ?HOs+e -+2AgO( ) + 2 ?H + ?Ag + ?HOH 2O 2 ( aq) + 2 ?H + + 2 ?e - 2?H 2O 3+e -2+ Co + ?Co+e -Au(s )Au + ?4 -+e -3 - +2BrO +2?H+2?BrO ?HO2++ e -+Ag ?Ag2 8 2-e -4 2-S O + 2 ?2?SOO 3( g) + 2 ?H ++ 2 ?e -O 2( g) + ?H 2O- + -MnO( s) + 2 ?H O HMnO + 3 ?H + 2 ?e4223aq +e - g 2 XeO( ) + 6 ?H +6? Xe( ) + 3 ?HO[note 1]E ° (V)+1.49+1.51 +1.51 +1.52+1.59 +1.63 +1.67 +1.67 +1.69 +1.70 +1.77 +1.78+1.82 +1.83 +1.85 +1.98 +2.010 +2.075+2.09+2.12Ref.[9][9][9][6][5][12]Half-reaction[note 1]E ° (V) 4 6 aq + e - g 2+2.18HXeO( )+8 ?H+8 ?Xe( ) + 6 ?H O2-- +3+4+ 3 ?e +8 ?HFe2+2.20 FeO+4 ?HO2aq+e -gaq+2.32 XeF( ) + 2 ?H+2? Xe( ) + 2HF()46 aq +e -3 aq 2+2.42 HXeO( )+2 ?H+2 ?XeO( ) + ?HO2ge -- +2.87F ( ) + 2 ? 2?F2 g +e -aq+3.05F ( ) + 2 ?H+2?2?HF( )Ref.[12][14][12][12][9][3][9]。