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A cell is prepared by dipping a copper rod in 1 M CuSO4 solution and an iron rod in 2 M FeSO4 solution. What are the cathode and anode respectively?(a) Cathode: Iron, Anode: Copper(b) Cathode: Copper, Anode: Iron(c) Cathode: Iron, Anode: Iron(d) Cathode: Copper, Anode: CopperI got this question in an interview.This is a very interesting question from Electrochemistry in chapter Electrochemistry of Chemistry – Class 12

Answer»

The correct choice is (b) Cathode: Copper, Anode: Iron

For EXPLANATION I would SAY: The given cell is represented as:

Fe (s) | FESO4 (2 M) || CuSO4 (1 M) | Cu (s)

Since the E° of iron < E° of copper, copper rod acts as the cathode and iron rod acts as the anode.



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