KI and `CuSO_4` solutions when mixed give

Kl and CuSO_(4) solutions when mixed give :

KI and CuSO_4 solution when mixed give .

FeSO_4 solution mixed with (NH_4)_2SO_4 solution is 1:1 molar ratio gives the test of Fe^(2+) ion but CuSO_4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu^(2+) ion. Explain why?

FeSO_4 solution mixed with (NH_4)_2SO_4 solution in 1:1 molar ratio gives the test of Fe^(2+) ion but CuSO_4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu^(2+) ion. Explain why ?

FeSO_4 solution mixed with (NH_4)_2SO_4 solution is 1:1 molar ratio gives the test of Fe^(2+) ion but CuSO_4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu^(2+) ion. Explain why?

FeSO_4 solution mixed with (NH_4)_2SO_4 solution is 1:1 molar ratio gives the test of Fe^(2+) ion but CuSO_4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu^(2+) ion. Explain why?

FeSO_4 solution mixed with (NH_4)_2SO_4 solution in 1:1 molar ratio gives the test of Fe2+ ion but CuSO_4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu2+ ion. Explain why?.