Potenciais padrão de redução

Agente oxidante

Agente redutor

E⁰ / V

↑

Poder

oxidante

crescente

↑

F₂ (g) + 2 e^-

→ 2 F^- (aq)

+2,87

↓

Poder

redutor

crescente

↓

O₃ (g) + 2 H⁺ (aq) + 2 e^-

→ O₂ (g) + H₂O (l)

+2,07

S₂O₈^2- (aq) + 2 e^-

→ 2 SO₄^2- (aq)

+2,01

Co³⁺ (aq) + e^-

→ Co²⁺ (aq)

+1,82

H₂O₂ (aq) + 2 H⁺ (aq) + 2 e^-

→ 2 H₂O (l)

+1,77

PbSO₂ (s) + 4 H⁺ (aq) + SO₄^2- (aq) + 2 e^-

→ PbSO₄ (s) + 2 H₂O (l)

+1,70

Ce⁴⁺ (aq) + e^-

→ Ce³⁺ (aq)

+1,61

MnO₄^- (aq) + 8 H⁺ (aq) + 5 e^-

→ Mn²⁺ (aq) + 4 H₂O (l)

+1,51

Au³⁺ (aq) + 3 e^-

→ Au (s)

+1,50

Cl₂ (g) + 2 e^-

→ 2 Cl^- (aq)

+1,36

Cr₂O₇^2- (aq) + 14 H⁺ (aq) + 6 e^-

→ 2 Cr³⁺ (aq) + 7 H₂O (l)

+1,33

MnO₂ (s) + 4 H⁺ (aq) + 2 e^-

→ Mn²⁺ (aq) + 2 H₂O (l)

+1,229

O₂ (g) + 4 H⁺ (aq) + 4 e^-

→ 2 H₂O (l)

+1,23

Br₂ (l) + 2 e^-

→ 2 Br^- (aq)

+1,065

NO₃^- (aq) + 4 H⁺ (aq) + 3 e^-

→ NO (g) + 2 H₂O (l)

+0,96

H₂O₂ (l) + 2 e^-

→ 2 OH^- (aq)

+0,95

Hg₂²⁺ (aq) + 2 e^-

→ 2 Hg (l)

+0,85

Ag⁺ (aq) + e^-

→ Ag (s)

+0,799

Fe³⁺ (aq) + e^-

→ Fe²⁺ (aq)

+0,770

O₂ (g) + 2 H⁺ (aq) + 2 e^-

→ H₂O₂ (aq)

+0,68

MnO₄^- (aq) + 2 H₂O (l) + 3 e^-

→ MnO₂ (s) + 4 OH^- (aq)

+0,59

I₂ (s) + 2 e^-

→ 2 I^- (aq)

+0,536

O₂ (g) + 2 H₂O (l) + 4 e^-

→ 4 OH^- (aq)

+0,40

Cu²⁺ (aq) + 2 e^-

→ Cu (s)

+0,327

AgCl (s) + 2 e^-

→ Ag (s) + Cl^- (aq)

+0,22

SO₄^2- (aq) + 4 H⁺ (aq) + 2 e^-

→ SO₂ (g) + 2 H₂O (l)

+0,20

Cu²⁺ (aq) + 2 e^-

→ Cu⁺ (s)

+0,15

Sn⁴⁺ (aq) + 2 e^-

→ Sn²⁺ (aq)

+0,13

2 H⁺ (aq) + 2 e^-

→ H₂ (g)

+0,00

CrO₄^2- (aq) + 4 H₂O (l) + 3 e^-

→ Cr(OH)₃ (s) + 5 OH^- (aq)

-0,12

Pb²⁺ (aq) + 2 e^-

→ Pb (s)

-0,126

Sn²⁺ (aq) + 2 e^-

→ Sn (s)

-0,136

Ni²⁺ (aq) + 2 e^-

→ Ni (s)

-0,25

Co²⁺ (aq) + 2 e^-

→ Co (s)

-0,28

PbSO₄ (s) + 2 e^-

→ Pb (s) + SO₄^2- (aq)

-0,31

Cd²⁺ (aq) + 2 e^-

→ Cd (s)

-0,40

Fe²⁺ (aq) + 2 e^-

→ Fe (s)

-0,44

Ni(OH)₂ (s) + 2 e^-

→ Ni (s) + 2 OH^- (aq)

-0,72

Cr³⁺ (aq) + 3 e^-

→ Cr (s)

-0,74

Zn²⁺ (aq) + 2 e^-

→ Zn (s)

-0,763

2 H₂O (l) + 2 e^-

→ H₂ (g) + 2 OH^- (aq)

-0,83

Mn²⁺ (aq) + 2 e^-

→ Mn (s)

-1,18

Al³⁺ (aq) + 3 e^-

→ Al (s)

-1,66

Be²⁺ (aq) + 2 e^-

→ Be (s)

-1,85

H₂ (g) + 2 e^-

→ 2 H^- (g)

-2,25

Mg²⁺ (aq) + 2 e^-

→ Mg (s)

-2,37

Na⁺ (aq) + e^-

→ Na (s)

-2,714

Ca²⁺ (aq) + 2 e^-

→ Ca (s)

-2,87

Sr²⁺ (aq) + 2 e^-

→ Sr (s)

-2,89

Ba²⁺ (aq) + 2 e^-

→ Ba (s)

-2,90

K⁺ (aq) + e^-

→ K (s)

-2,93

Li⁺ (aq) + e^-

→ Li (s)

-3,05