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प्रश्न
How many faradays of electricity are required for the following reaction to occur
\[\ce{MnO^-_4 -> Mn^2+}\]
पर्याय
5F
3F
1F
7F
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उत्तर
5F
Explanation:
\[\ce{7MnO^-_4 + 5e^- -> Mn^{2+} + 4H2O}\]
5 moles of electrons i.e., 5F charge is required.
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संबंधित प्रश्न
E°cell for the given redox reaction is 2.71 V
Mg(s) + Cu2+ (0.01 M) → Mg2+ (0.001 M) + Cu(s)
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(i) less than 2.71 V and
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Reduction potential of two metals M1 and M2 are \[\ce{E^0_{{M_1^{2+}|M_1}}}\] = −2.3 V and \[\ce{E^0_{{M_2^{2+}|M_2}}}\] = 0.2 V. Predict which one is better for coating the surface of iron.
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