Reacciones de transferencia de electrones. Autoevaluación
Tabla de potenciales normales
|
Semirreacciones |
Potencial estándar de reducción E°(V) |
|||
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F2 + 2e- |
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2 F- | ![]() |
+2.87 |
Co3+ + 1e- |
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Co2+ | +1.82 | ||
H2O2 + 2 H+ + 2e- |
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2 H2O |
+1.78 | ||
MnO4-+ 8H++ 5e- |
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Mn2+ + 4 H2O |
+1.49 |
||
Cl2(g) + 2e- |
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2Cl- |
+1.36 |
||
Cr2O72- + 14H+ + 6e- |
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2Cr3+ + 7H2O |
+1.33 |
||
O2 + 4H+ + 4e- |
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2H2O |
+1.23 |
||
IO3- + 6H+ + 5e- |
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1/2 I2 + 3H2O |
+1.20 |
||
Br2 + 2e- |
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2Br - | +1.06 | ||
NO3- + 4H+ +3e- |
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NO+ 2H2O |
+0.96 | ||
NO3- + 3H+ +2e- |
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HNO2 + H2O |
+0.94 |
||
Cu2+ + I- + 1e- |
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CuI |
+0.86 |
||
Hg22+ + 2e- |
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2Hg | +0.80 |
||
Ag+ + 1e- |
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Ag |
+0.80 |
||
Fe3+ + 1e- |
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Fe2+ |
+0.77 |
||
2HgCl42- + 2e- |
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Hg2Cl2(s) + 6Cl- |
+0.69 |
||
I2 (aq) + 2e- |
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2I- |
+0.62 |
||
I3- + 2e- |
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3I- |
+0.54 |
||
AsO43-+ 2H++ 2e- |
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AsO33-+ H2O | +0.58 | ||
SO32- + 6H+ + 4e- |
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S + 3H2O | +0.45 | ||
O2(g) + 2H2O + 4e- |
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4OH- | +0.40 | ||
Cu2+ + 2e- |
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Cu(s) |
+0.34 |
||
Hg2Cl2(s) + 2e- |
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2Hg + 2Cl- |
+0.27 |
||
AgCl + 1e- |
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Ag + Cl- |
+0.22 |
||
Sn4+ + 2e- |
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Sn2+ |
+0.15 |
||
Cu2+ + 1e- |
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Cu+ |
+0.15 |
||
S + 2 H+ + 2e- |
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H2S |
+0.14 | ||
HCHO(aq) + 2H+ + 2e− |
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CH3OH(aq) | +0.13 | ||
H2O2+ 2e- |
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2OH- |
+0.12 | ||
S4O62- + 2e- |
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2S2O32- |
+0.08 |
||
2H+ + 2e- |
|
H2 |
0.00 |
||
CrO42- +4H2O + 3e- |
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Cr3+ + 8OH- |
-0.13 | ||
Sn2+ + 2e- |
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Sn |
-0.14 |
||
2CO2 (g) + 2H+ + 2e- |
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H2C2O4 |
-0.49 |
||
Zn2+ + 2e- |
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Zn |
-0.76 |
||
2H2O + 2e- |
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H2 + 2OH- | -0.88 | ||
Ca2+ + 2e− |
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Ca(s) | −2.76 | ||
Li+ + 1 e- |
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Li | -3.04 |
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