The equivalent conductance of a substance is 1/3rd of the molar conductance. The time required to electrolyse 3 moles the substance using a current of 9 ampere is

Step-by-step solution

Since the equilibrium mass is 1 3 of molecular mass, therefore 1 mole of substance will be liberated by using 3 moles of electrons M 3 + + 3 e - → M ( s ) So 9 × 96500 = 9 × t or t   =   96500   sec   =   96500 60 ≈ 1608   min