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Question

During electrolysis of a solution of AgNO3,9650 coulomb of charge pass through the electrolytic cell; the mass of silver deposited on the cathode will be:

A
21.6 g
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B
108 g
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C
10.8 g
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D
1.08 g
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Solution

The correct option is C 10.8 g
The half cell reaction for the formation of Silver:-

Ag++1eAg(s)

Formula:-

(i) No. of moles of Ag=Q(c)96500Cmol1e×moleratio

(ii) Mole ratio=molesofAgformedmolesofelectrons1

No. of moles of Ag=9650C96500Cmol1e×1

Wmolarmass=9650C96500Cmol1e×1

W(g)108gmol1=9650C96500Cmol1e1

W=9650×108gmol196500mol1=108g10=10.8g

Mass of silver deposited=10.8g.

Hence, the correct option is C

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