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Aqueous copper sulphate solution and aqueous silver nitrate solution are electrolysed separated electrolytic cells. Will the mass of copper and silver deposited on the cathode be same different ? Explain your answer. |
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Answer» Solution :* It will be different. ACCORDING to Faraday.s second law, the amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are Proportional `("Atomic mass of meta")/("No. of electrons")` to their chemical EQUIVALENT weights electrons required to reduce the cation. Here, for the electrode reactions: `Ag^(+)+e^(-) to Ag and Cu^(2+) +2e^(-) to Cu` * Hence, one mole of `Cu^(2+) and Ag^(3+)` REQUIRE 2 mol of electron (2F) and 1 mol of electrons `(F_(1))` respectively. |
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