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

Chemistry
JAMB 2020

What quantity of electricity will liberate 0.125 mole of oxygen molecules during the electrolysis of dilute sodium chloride solution?

  • A. 24,125 C
  • B. 48,250 C
  • C. 72,375 C
  • D. 96,500 C
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Correct Answer: Option B
Explanation

4OH ⇒ 2H\(_2\)O + O\(_2\) + 4e-

From the equation:

1 mole of Oxygen requires 4e 

i.e 1 mole of Oxygen requires 4F,

where 1F = 96,500 C

[ 4 X 96,500 X 0.125 ] ÷ 1

= 48,250 C

There is an explanation video available below.


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Explanation Video

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