ElectrochemistryHard

Question

Three  moles of electrons are passed through three solutions in succession containing AgNO3, CuSO4, and AuCl3, respectively. The molar ratio of amounts of cations reduced at cathode will be

Options

A.1 : 2 : 3
B.
C.3 : 2 : 1
D.6 : 3 : 2

Solution

                    Ag        Cu         Au
equivalent    1      :     1     :      1
ratio                  :         :    
                    6     :       3     :      2.

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