CHEM-E4106 - Electrochemistry D, Lecture, 9.1.2023-21.2.2023

Based on the international convention that E⁰(H⁺/H₂) $\equiv$ 0 V at all temperatures.

Electrode                                     E⁰/V                Reaction

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Li⁺|Li                                        -3.040                Li⁺ + e^- → Li

K⁺|K                                         -2.924                K⁺ + e^- → K

Rb⁺|Rb                                     -2.924                Rb⁺ + e^- → Rb

Na⁺|Na                                     -2.713                Na⁺ + e^- → Na

Mg²⁺|Mg                                  -2.356                1/2 Mg²⁺ + e^- → 1/2 Mg

Al³⁺|Al                                     -1.676                1/3 Al³⁺ + e^- → 1/3 Al

OH^-|H₂|Pt                                -0.828                H₂O + e^- → 1/2 H₂ + OH^-

Zn²⁺|Zn                                    -0.7626              1/2 Zn²⁺ + e^- → 1/2 Zn

S^2-|Ag₂S(s)|Ag                        -0.691                1/2 Ag₂S + e^- → Ag + 1/2 S^2-

Br^-|TlBr(s)|Tl                           -0.658                TlBr + e^-→ Tl + Br^-

Fe²⁺|Fe                                     -0.44                  1/2 Fe²⁺ + e^- → 1/2 Fe

Cr³⁺, Cr²⁺|Pt                             -0.424                Cr³⁺ + e^- → Cr²⁺

Cd²⁺|Cd                                   -0.403                1/2 Cd²⁺ + e^- → 1/2 Cd

I^-|PbI₂(s)|Pb                             -0.365                1/2 PbI₂ + e^- → 1/2 Pb + I^-

SO₄^{2  -}|PbSO₄(s)|Pb                    -0.359                1/2 PbSO₄ + e^- → 1/2 Pb + 1/2 SO₄^{2  -}

F^-|PbF₂(s)|Pb                           -0.344                1/2 PbF₂ + e^- → 1/2 Pb + F^-

Tl⁺|Tl                                        -0.3363              Tl⁺ + e^- → Tl

Br^-|PbBr₂(s)|Pb                        -0.280                1/2 PbBr₂ + e^- →  1/2 Pb + Br

Co²⁺|Co                                    -0.277                1/2 Co²⁺ + e^- → 1/2 Co

Cl^-|PbCl₂(s)|Pb                        -0.268                1/2 PbCl₂ + e^- → 1/2 Pb + Cl^-

Ni²⁺|Ni                                     -0.257                1/2 Ni²⁺ + e^- → 1/2 Ni

I^-|AgI(s)|Ag                             -0.1522              AgI + e^- → Ag + I^-

Sn²⁺|Sn                                     -0.136                1/2 Sn²⁺ + e^- → 1/2 Sn

Pb²⁺|Pb                                     -0.1251              1/2 Pb²⁺ + e^- → 1/2 Pb

TiO²⁺. Ti³⁺|Pt                           0.10                    TiO²⁺ + 2H⁺ + e^- → Ti³⁺+ H₂O

Br^-|AgBr(s)|Ag                        0.0711                AgBr + e^- → Ag + Br^-

Sn⁴⁺, Sn²⁺|Pt                            0.15                    1/2 Sn⁴⁺ + e^- → 1/2 Sn²⁺

Cu²⁺, Cu⁺|Pt                             0.159                  Cu²⁺ + e^- → Cu⁺

Cl^-|AgCl(s)|Ag                        0.2223                AgCl + e^- → Ag + Cl^-

Cl^-|Hg₂Cl₂(s)|Hg                     0.2682*              1/2Hg₂Cl₂ + e^- → Hg + Cl^-

Cu²⁺|Cu                                    0.340                  1/2 Cu²⁺ + e^- → 1/2 Cu

OH^-|O₂|Pt                                0.401                  1/2 O₂ + H₂O + 2e^- → 2 OH^-

CO₃^{2  -}|Ag₂CO₃(s)|Ag                0.47                    1/2 Ag₂CO₃ + e^- → Ag + 1/2 CO₃^{2  -}

Cu⁺|Cu                                     0.520                  Cu⁺ + e^- → Cu

I^-|I₂(s)|Pt                                  0.5355                1/2 I₂ + e^- → I^-

SO₄^{2  -}|Hg₂SO₄(s)|Hg                 0.613                  1/2 Hg₂SO₄ + e^- → Hg + 1/2 SO₄^{2  -}

SO₄^{2  -}|Ag₂SO₄(s)|Ag                 0.654                  1/2 Ag₂SO₄ + e^- → Ag + 1/2 SO₄^{2  -}

H⁺|quinhydrone(s)|Pt                  0.6996                1/2 C₆H₄O₂ + H⁺ + e^- → 1/2 C₆H₆O₂

Fe³⁺, Fe²⁺|Pt                             0.771                  Fe³⁺ + e^- → Fe²⁺

Hg₂^{2  +}|Hg                                   0.796                  1/2 Hg₂^{2  +} + e^- → Hg

Ag⁺|Ag                                     0.799                  Ag⁺ + e^- → Ag

Hg²⁺, Hg₂^{2  +}|Pt                            0.911                  Hg²⁺ + e^- → 1/2 Hg₂^{2  +}

Br^-|Br₂(l)|Pt                             1.065                  1/2 Br₂(l) + e^- → Br^-

H⁺|O₂|Pt                                   1.229                  1/2 O₂ + 2 H⁺ + 2 e^- → H₂O

Tl³⁺, Tl⁺|Pt                               1.25                    1/2 Tl³⁺ + e^- → 1/2 Tl⁺

Cl^-|Cl₂(g)|Pt                             1.3583                1/2 Cl₂(g) + e^- → Cl^-

Pb²⁺|PbO₂|Pb                           1.468                  1/2 PbO₂(s) +  2H⁺+ e^- → 1/2 Pb²⁺ + H₂O

Au³⁺|Au                                   1.52                    1/3 Au³⁺ + e^- → 1/3 Au

SO₄^{2  -}|PbO₂(s)|PbSO₄(s)|Pb       1.698                  PbO₂ + SO₄^{2  -} + 4 H⁺ + 2 e^- → PbSO₄ + 2 H₂O

Ce⁴⁺, Ce³⁺|Pt                            1.72                    Ce⁴⁺ + e^- → Ce³⁺

Co³⁺, Co²⁺|Pt                           1.92                    Co³⁺ + e^- → Co²⁺

F^-|F₂(g)|Pt                                2.87                    1/2 F₂(g) + e^- → F^-

HF(aq)|F₂(g)|Pt                        3.053                  H⁺ + 1/2 F₂(g) + e^- → HF(aq)