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  4. In the electrolysis of water, one faraday of electrical energy would evolve :

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Q. In the electrolysis of water, one faraday of electrical energy would evolve :

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Solution:

Hydrolysis of water can be represented by the following equations? $ 2{{H}_{2}}O\rightleftharpoons {{O}_{2}}+4{{H}^{+}}+4{{e}^{-}} $ $ \because $ 4 faraday of charge liberate $ {{O}_{2}}=32\,g $ $ \therefore $ 1 faraday of charge liberate $ {{O}_{2}}=\frac{32}{4}=8g $