A student made the following observations in the laboratory:
(I) Clean copper metal did not react with 1 M – Pb(NO3)2 solution.
(II) Clean lead metal dissolves in 1 M – AgNO3 solution and crysta

Question

A student made the following observations in the laboratory:
(I) Clean copper metal did not react with 1 M – Pb(NO3)2 solution.
(II) Clean lead metal dissolves in 1 M – AgNO3 solution and crystals of Ag metal appeared.
(III) Clean silver metal did not react with 1 M – Cu(NO3)2 solution.
The order of decreasing reducing character of the three metals is

Prashant Kotian · Accepted Answer

Correct answer: C. Observation (I) implies Pb is more reactive than Cu. Observation (II) implies Pb is more reactive than Ag. Observation (III) implies Cu is more reactive than Ag. Combining these observations, the order of reducing character (reactivity) is Pb > Cu > Ag. Therefore, correct answer is C.

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