Select the correct answer from the options given in the brackets:

Question

(a) The ion which is discharged at the cathode during the electrolysis of CuSO₄ solution using copper electrodes. [Cu²⁺, OH^-, SO₄^2-, H⁺]

(b) During electroplating of an article with Ag using sodium argentocyanide as an electrolyte, the anode is made of. [Cu, Ag, Pt, Na]

Accepted Answer

(a) Cu 2+ Reason — During the electrolysis of CuSO 4 solution using copper electrodes. Both Cu 2+ and H + ions migrate to the cathode, Cu 2+ ions discharged as neutral copper atoms. (b) Ag Reason — During electroplating of an article with Ag using sodium argentocyanide as an electrolyte, the anode is the plate of pure clean silver.

Select the correct answer from the options given in the brackets:

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