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During the electrolysis of fused carnali...

During the electrolysis of fused carnalite, `MgCl_(2)`is decomposed to liberate Mg at cathode and not KCl to liberate the K at cathode. This is because of:

A

lower decomposition voltage of `MgCl_(2)` than that of KCl

B

higher decomposition voltage of `MgCl_(2)` than that of KCl

C

higher melting point of `MgCl_(2)` than KCl

D

none of the above

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The correct Answer is:
A
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