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CHEMISTRY

JAMB 2020 - Question 27

Chemistry 2020 JAMB Past Questions - Question 27: 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 ]

Choose the most appropriate option for the gap .

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 colombs

B: 48 250 colomns

C: 72 375 coulombs

D: 96 500 coulombs

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Correct Answer

Explanation

4 faradays of electricity is required to liberate one mole of oxygen gas i.e quantity of electricity required = 0.125 X 4 X 965000 = 48250 coulombs