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Q.

Mass in grams of copper deposited by passing 10 A current through a voltmeter containing copper sulphate solution for 100 seconds is [ molar mass of Cu = 63 g mol-1]

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a

32.6 g

b

3.26 g

c

0.326 g

d

0.0326 g

answer is B.

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Detailed Solution

mCu= At. wt ×C×t Valency ×96500=63×10×1002×96500
= 0.326 g

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