Redox Reactions And Electrochemistry Ques 321

Question: In the electrolysis of water, one Faraday of electrical energy would evolve [DCE 2004]

Options:

A) One mole of oxygen

B) One g atom of oxygen

C) 8 g of oxygen

D) 22.4 litres of oxygen

Show Answer

Answer:

Correct Answer: C

Solution:

Hydrolysis of water : $ 2H_2O $ ⇌ $ 4{H^{+}}+4{e^{-}}+O_2 $ 4 F charge will produce = 1 mole $ O_2=32\ gm\ O_2 $ 1 F charge will produce $ =\frac{32}{4}=8\ gm\ O_2 $ .



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