Q.

The weight of hydrogen deposited at cathode when 965 amperes current is passed for 100 seconds through acidulated water is

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answer is 3.

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Detailed Solution

Number of Coulombs passed = Amp x sec =965 x 100 =9650096500C always deposits 1 equivalent of any substance. Equivalent mass of H2 is 1.1 gm is deposited.

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