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Question

How much electricity should be passed through a water votameter in order to release 22.4 liter of hydrogen at N.T.P?

A
1 coul
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B
22.4 coul
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C
96599 coul
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D
1,93,000 coul
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Solution

The correct option is D 1,93,000 coul
We know 2.016 gm of hydrogen occupies 22.4 liters at N.T.P also, to liberate 1.008 gm of hydrogen charge required is 96500 C (1 Faraday).
Hence, the electricity required to release 22.4 liter of hydrogen at N.T.P is
=2.0161.008×96500=2×96500=193000C

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