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Q.

The correct statements among the following is

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a

charge required for the oxidation or reduction of a substance depends upon the stoichiometry of the electrode reaction

b

2 moles of electrons are required for the reduction of 1 mole of calcium ion

c

50,000 A current is equal to 0.518 F per second

d

Charge required for reducing 1 mole of MnO4- in to Mn2+ is 4.28×105C

answer is A.

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Detailed Solution

MnO4−+5e−⟶Mn2+    5e−≡5F=5×96500=4.82×105C
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