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Electrolysis and Electrolytes

A leclanche c...

Question

A leclanche cell supplies a current of one ampere for ten minutes. The electreochemical equivalent of hydrogen $=$ 0.00001014 gram per coulomb. The mass of hydrogen liberated is

A

0.00625 g

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B

0.01248 g

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C

0.01872 g

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D

0.02496 g

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Solution

The correct option is A 0.00625 g
Using the Faraday's law, the amount of mass deposited, $m = z I t$
Here, $z = 0.00001014, I = 1 A, t = 10 m i n = 10 \times 60 = 600 s e c$
Thus, $m = 0.00001014 \times 1 \times 600 = 0.00608 g m$

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