What quantity of electricity will liberate 0.125 mole of oxygen molecules during the electrolysis of...

JAMB 1999

What quantity of electricity will liberate 0.125 mole of oxygen molecules during the electrolysis of dilute sodium chloride solution?
[ F = 96 5000 C mol^-1 ]

A. 24 125 coulombs
B. 48 250 coulombs
C. 72 375 coulombs
D. 96 500 coulombs

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Correct Answer: Option B

Explanation

4 Faradays of electricity is required to liberate one mole of oxygen gas
∴ quantity of electricity required
= 0.125 * 4 * 96500 = 48250 coulombs

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What quantity of electricity will liberate 0.125 mole of oxygen molecules during the electrolysis of...

Correct Answer: Option B

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