Aqueous copper sulphate solution and aqueous silver nitrate solution are electrolysed by 1 ampere current for 10 minutes in separate electrolytic cells. Will, the mass of copper and silver, deposited on the cathode be the same or different? Explain your answer.
According to Faraday's second law of electrolysis amount of different substance liberated by same quantity or electricity passes through electrolyte solution is directly proportional to their chemical equivalent weight.
W1/W2=E1/E2
where, E1 and E2 have different values depending upon number of electrons required to reduce the metal ion.
Hence, masses of Cu and Ag deposited will be different.