Answer :


Given-
Mass of silver deposited, m = 3 g



Time taken, t = 3 min. = 180 s



Electrochemical equivalent of silver, Z = 1.12 × 10−6 kg C−1


Using the formula, from faraday’s law of electrolysis –



where,


m = the mass of the substance deposited on the electrode


z=electrochemical equivalence


i=current passing


t=time taken


substituting the values





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