Question: FeSO, solution mixed with (NH.).SO, solution in 1:1 molar ratio gives the test of Fe ion but CuSO,solution mixed with aqueous ammonia in 1:4

FeSO, solution mixed with (NH.).SO, solution in 1:1 molar ratio gives the

FeSO, solution mixed with (NH.).SO, solution in 1:1 molar ratio gives the test of Fe" ion but CuSO,solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu" ion. Explain why?

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