Question on: JAMB Chemistry - 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 Option: B
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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