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+1 vote
45.8k views
in Electrochemistry by (79.0k points)
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Time taken to completely decompose 36 g of water by passing 3A current is 

(a) 35.8 hr

(b) 40 hr

(c) 51.8 hr

(d) 22.5 hr

by (10 points)
Sir please tell me from which book you have asked question
by (10 points)
Sir please please  tell me from which book you have asked question??

1 Answer

+2 votes
by (50.7k points)
selected by
 
Best answer

Correct option (a) 35.8 hr

Explanation:

 2H2  2H2+ O2

36 g

2 moles of H2O ≡ 4 moles of e-s

4 F of charge is required for complete decomposition.

Now, Q = I x t

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