one faraday of electricity will liberate one gram of metal from solution of A)AuCl2 B)BaCl2 C)CuSO4 D) KCl

Dear student

One faraday will liberate one gram from a univalent electrolyte
The correct answer is KCl, as KCl dissociates into univalent ions K+ and Cl-while, AuCl2, BaCl2, CuSO4 all dissociate into divalent ions.

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