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Question

During the electrolysis of molten sodium chloride, the time required to produce 0.10 mole of chlorine gas using a current of 3 ampere is

A
110 minutes
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B
220 minutes
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C
55 minutes
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D
330 minutes
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Solution

The correct option is A 110 minutes
NaCl Na+Cl
2 ClCl(g)+2e
By Faradays first lay of electrolysis,
W=Z×I×t
W is the mass of the substance produced
W = Moles × Molecular mass
I is the current in Ampere (A)
t is the time in seconds
Z is the electrochemical equivalent
W=E×I×tF

E=Equivalent mass
t=W×FE×I

=0.1×71×9650035.5×3

110 min

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