Electromotive series
Half-reaction |
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Oxidant |
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Reductant | Eo(V) |
Sr+ + e- |
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Sr | -4.10 |
Ca+ +e- |
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Ca | -3.8 |
Pr3+ +e- |
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Pr2+ | -3.1 |
3N2(g)+2H++ 2e- |
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2HN3(aq) | -3.09 |
Li++ e- |
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Li(s) | -3.0401 |
N2(g)+ 4 H2O + 2e- |
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2NH2OH(aq) + 2 OH- | -3.04 |
Cs++ e- |
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Cs(s) | -3.026 |
Ca(OH)2 + 2e- |
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Ca + 2OH- | -3.02 |
Er3++ e- |
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Er2+ | -3.0 |
Ba(OH)2 + 2e- |
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Ba + 2OH- | -2.99 |
Rb++ e- |
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Rb(s) | -2.98 |
K++ e- |
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K(s) | -2.931 |
Ba2++ 2e- |
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Ba(s) | -2.912 |
La(OH)3(s) + 3e- |
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La(s) + 3OH- | -2.90 |
Fr++ e- |
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Fr | -2.9 |
Sr2++ 2e- |
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Sr(s) | -2.899 |
Sr(OH)2 + 2e- |
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Sr + 2OH- | -2.88 |
Ca2++ 2e- |
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Ca(s) | -2.868 |
Eu2++ 2e- |
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Eu(s) | -2.812 |
Ho3++ e- |
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Ho2+ | -2.8 |
Bk3++ e- |
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Bk2+ | -2.8 |
Ra2++ 2e- |
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Ra(s) | -2.8 |
Yb2++ 2e- |
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Yb | -2.76 |
Na++ e- |
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Na(s) | -2.71 |
Mg++ e- |
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Mg | -2.70 |
Nd3++ e- |
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Nd2+ | -2.7 |
Mg(OH)2 + 2e- |
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Mg + 2OH- | -2.690 |
Sm2++ 2e- |
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Sm | -2.68 |
Be2O32-+ 3H2O + 4e- |
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2Be + 6OH- | -2.63 |
Pm3++ e- |
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Pm2+ | -2.6 |
Dy3++ e- |
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Dy2+ | -2.6 |
No2++ 2e- |
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No | -2.50 |
HfO(OH)2 + H2O + 4e- |
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Hf + 4OH- | -2.50 |
Th(OH)4 + 4e- |
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Th + 4OH- | -2.48 |
Md2++ 2e- |
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Md | -2.40 |
Tm2++ 2e- |
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Tm | -2.4 |
La3++ 3e- |
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La(s) | -2.379 |
Y3++ 3e- |
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Y(s) | -2.372 |
Mg2++ 2e- |
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Mg(s) | -2.372 |
ZrO(OH)2(s) + H2O + 4e- |
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Zr(s) + 4OH- | -2.36 |
Pr3++ 3e- |
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Pr | -2.353 |
Ce3++ 3e- |
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Ce | -2.336 |
Er3++ 3e- |
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Er | -2.331 |
Ho3++ 3e- |
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Ho | -2.33 |
H2AlO3- + H2O + 3e- |
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Al + 4OH- | -2.33 |
Nd3++ 3e- |
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Nd | -2.323 |
Tm3++ 3e- |
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Tm | -2.319 |
Al(OH)3(s) + 3e- |
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Al(s) + 3OH- | -2.31 |
Sm3++ 3e- |
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Sm | -2.304 |