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

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

Options

(a) one mole of oxygen
(b) one g atom of oxygen
(c) 8 g of oxygen
(d) 22.4 litres of oxygen

Correct Answer:

8 g of oxygen

Explanation:

Hydrolysis of water can be represented by the following equations: 2H₂O ⇌ O₂ + 4H⁺ + 4e⁻. 4 Faraday of charge liberate O₂ = 32 g. Therefore 1 Faraday of charge liberate O₂ = 32/4 = 8g.

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