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Question

The volume of gases evolved by passing 0.965 ampere current for 10 hours through an aqueous solution of CH3COONa at STP.

A
8.06 L
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B
16.13 L
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C
32.24 L
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D
1.76 L
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Solution

The correct option is B 16.13 L
Reaction
At Cathode : 2H2O+2eH2+2OH
At Anode : 2CH3COOC2H6+2CO2+2e2H2O+CH3COOH2(g)+C2H2(g)+2CO2(g)+2OH
No. of Faraday=0.965×10×60×6096500=0.36
If 2 moles e was transferred, the moles of gases produced =4
For 0.36 moles gases produced=42×0.36 mole
=0.72 mole
Volume=16.13 L

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