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Question

Question 11

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is


(a) 1:1
(b) 2:1
(c) 4:1
(d) 1:2

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Solution

Option (b) is correct.

Water undergoes decomposition during electrolysis and forms hydrogen and oxygen gas in the ratio 2:1 by volume. The reaction occurs as follows:

2H2O2H2+O2

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