MetallurgyHard
Question
During the electrolysis of fused carnallite, MgCl2 is decomposed to liberate Mg at cathode and not KCl to liberate the K at cathode. This is because of :
Options
A.lower decomposition voltage of MgCl2 than that of KCl
B.higher decomposition voltage of MgCl2 than that of KCl.
C.higher melting point of MgCl2 than KCl.
D.none of the above
Solution
(A) It is correct statement. Mg2+ is having lower decomposition potential than K+
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