Reduction Potential Table | Study notes Chemistry

Neutral or Acid Solution

Reduction Half–Reaction

Eo(V)

F2(g) + 2e– ! 2F–(aq)

2.86

OF2(g) + 2H+ (aq)+ 4e– ! H2O(l) + 2F–

(aq)

2.1

O3(g) + 2H+ (aq)+ 2e– ! O2(g) + H2O(l)

2.075

S2O82– (aq) + 2e– ! 2SO42–(aq)

2.01

Ag2+(aq) + e– ! Ag+(aq)

1.98

Co3+(aq) + e– ! Co2+(aq)

1.82

H2O2(aq)+ 2H+(aq)+ 2e– ! 2H2O(l)

1.763

MnO4– (aq ) + 4H+(aq)+ 3e– ! MnO2(s) + 2H2O(l)

1.70

PbO2(s) + SO4 2–(aq)+ 4H+(aq) + 2e– ! PbSO4(s) + 2H2O(l)

1.69

Au3+(aq) + 3e– ! Au(s)

1.52

MnO4–(aq ) + 8H+(aq)+ 5e– ! Mn2+(aq) + 4H2O(l)

1.51

2BrO3

– (aq) + 12H+(aq) + 10e– ! Br2(l) + 6H2O(l)

1.478

PbO2(s) + 4H+ (aq)+ 2e– ! Pb2+(aq) + 2H2O(l)

1.455

ClO3

– (aq) + 6H+(aq) + 6e– ! Cl–

(aq)+ 3H2O(l)

1.450

Ce4+(aq) + e– ! Ce3+(aq)

1.44

Au3+(aq) + 2e– ! Au+(aq)

1.36

Cl2(g) + 2e– ! 2Cl–(aq)

1.358

Cr2O72– (aq) + 14H+(aq) + 6e– ! 2Cr3+(aq) + 7H2O(l)

1.33

MnO2(s) + 4H+ (aq)+ 2e– ! Mn2+(aq) + 2H2O(l)

1.23

O2(g) + 4H+(aq) + 4e– ! 2H2O(l)

1.229

2IO3

– (aq) + 12H+(aq) + 10e– ! I2(s) + 6H2O(l)

1.20

ClO4

– (aq) + 2H+(aq) + 2e– ! ClO3

–

(aq) + H2O( l)

1.19

ClO3

– (aq) + 2H+(aq) + e– ! ClO2(g) + H2O(l)

1.175

NO2(g) + H+ (aq)+ e– ! HNO2(aq)

1.07

Br2(l) + 2e– ! 2Br–(aq)

1.065

NO2(g) + 2H+ (aq)+ 2e– ! NO(g) + H2O(l)

1.03

[AuCl4]– (aq)+ 3e– ! Au(s) + 4Cl–

(aq)

1.002

VO2

+(aq )+ 2H+(aq) + e– ! VO2+(aq) + H2O(l)

1.000

NO3–(aq ) + 4H+(aq)+ 3e– ! NO(g) + 2H2O(l)

0.956

2Hg2+(aq) + 2e– ! Hg22+(aq)

0.90

Cu2+(aq) + I –

(aq)+ e– ! CuI(s)

0.86

Hg2+(aq) + 2e– ! Hg(l)

0.854

Ag+(aq) + e– ! Ag(s)

0.800

Hg22+(aq) + 2e– ! 2Hg(l)

0.80

Fe3+(aq) + e– ! Fe2+(aq)

0.771

O2(g) + 2H+ (aq)+ 2e– ! 2H2O2(aq)

0.695

2HgCl2(s) + 2e– ! Hg2Cl2(s) + 2Cl–( aq)

0.63

MnO4–(aq ) + e– ! MnO42–(aq)

0.56

I2(s) + 2e– ! 2I–(aq)

0.535

Cu+(aq) + e– ! Cu(s)

0.520

H2SO3(aq) + 4H+(aq)+ 4e– ! S(s) + 3H2O(l)

0.449

C2N2(g) + 2H+(aq)+ 2e– ! 2HCN(aq)

0.37

[Fe(CN)6]3– (aq)+ e– ! [Fe(CN)6]4–

(aq)

0.361

Cu2+(aq) + 2e– ! Cu(s)

0.337

VO2+

(aq) + 2H +(aq)+ e– ! V3+(aq) + H2O(l)

0.337

PbO2(s) + 2H+ (aq)+ 2e– ! PbO(s) + H2O(l)

0.28

2HgCl2(s) + 2e– ! 2Hg(l) + 2Cl–

(aq)

0.2676

HAsO2(aq) + 3H+ (aq)+ 3e– ! As(s) + 2H2O(l)

0.240

AgCl(s) + e– ! Ag(s) + Cl–(aq)

0.2223

SO42–(aq ) + 4H+(aq)+ 2e– ! SO2(g) + 2H2O(l)

0.17

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Neutral or Acid Solution

Neutral or Acid Solution EW) Fag) + 26° > Fi 2.86 OF x9) + 2D yt 4° > HO p+ Fao) 21 Osa) + 2 ayy 207 On + HO 2.075 gt 2€ > 280s> eq 2.01 1.98 CoP agte > Ce 1.82 HOrj+ 21 gt 26° > 2HLOp 1.763 Mn0¢ (ay) + 4H yt 36 MnO) + 2H20y 1.70 PbO x=) + SO4 > faqs AHL faq + 2€° > © PbSO4) + 2HsOq) 1.69 Au (qt 3e€ > Aug) 1.52 MnO, (aq) + 8H faqyt SE° > Mn faqy + 4H2Oqy LSI 2BrOS (y+ ZA gy + 10E > Brag) + 6H:Oq) 1.478 PbOx2) + 4H’ agit 2° > PH” (ay) + 2H2Oq) 1.455 CIOS (oq) + fay + GE > — Ch faqy+ 3H2Oy 1.450 Ce ag te > CeM ay 1.44 Au (aq t2€ > Aue 1.36 Cha) + 267 > 2CT ap 1.358 C107 (ayy + AH fay + 6° > 2Cr* aq + THO ey 1.33 MnO xq) + 4H (agit 2° > Mn faq) + 220g 1.23 Ox + 4H oy + 4€ > 2HLO 0 1.29 20S oq) + 12H aq + 108° > Tay + 6H2Oq) 1.20 CIOS (+ 2 y+ 2€° > ClOs wy + H20(D) 1.19 ClOS ay +2 aq +e > ClO) +H:09) L175 NOx) +H gate” > — HNOsq) 1.07 Bry + 2° > 2Broop 1.065 NO2g) + 2H” @gt 2° > NOw + Hs0p 1.03 [AUCLI (ag 3e° > Aug) + 4CT oq) 1.002 ‘VOs (aq }+ 2H ay + & > VO™ (oq) + HaOqy 1,000 NOs (aq) + 4H (yt 3° NO + 2H200) 0.956 2Ha" og +26 > Har" 0.90 Cu ay + apt > Cul, 0.86 He" (a + 2e > Hea 0.854 Agog te > Age 0.800 Haya) + 2e° > 2H 0.80 Fev agte > Fe™ ay 0.771 Ong + 2H agit 2e” WhO rq) 0.695 2HigClyy +26 > HasCly) + 2Cr(ag) 0.63 MnO¢(aqg) +e > MnO aq 0.56 Ty +2 > Wey 0.535 Cty t & > Cg) 0.520 H2SOx(a) + 4H gt 4° > Se) + 320m 0.449 CNay) + 21 agit 2€° > ZHCNaw 037 [FeCN)d* amt © > [Fe(CN)aI“oo 0361 Cu (oy + 26 > Crys, 0.337 VO" (oq) + 2H fay > Vay + Haq 0.337 PbOr) + A qyt 26° > PHO~ + HaOoy 0.28 2HgClyy +26 > 2Hgq + 2Cl ey 0.2676 HAsO.) + 3H agit 3€° > Asg + 2HLO py 0.240 AgCly +e > Age + Clap 0.2223 S047 (aq) + 4H faqyt 26° > SOx@) + 2H20q) 0.17

Reduction Potential Table, Study notes of Chemistry

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Neutral or Acid Solution