Q.

How long will it take to produce 1 kg of Cl2 from 20 Lit of 20% by weight NaCl aqueous solution by passing 25 A current with 62% current efficiency is passed.

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a

48.72 hr

b

4.872 hr

c

48.72 s

d

48.72 min

answer is A.

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Detailed Solution

1kgCl2=100035.5 equivalentof Cl2=28.17 equivalentof Cl2Theoretical electricity required - 28.17 FEfficiency is 62%Electricity required (experimental) =28.17×100F62=45.44F⇒45.44×96500=25t; t=48.72hr
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