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Home » FeSO4 solution mixed with (NH4)2SO4 solution in 1:1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu2+ ion. Explain why.
FeSO4 solution mixed with (NH4)2SO4 solution in 1:1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu2+ ion. Explain why.
CBSE | Chemistry | Class 12 | Coordination Compounds | NCERT
FeSO4 solution mixed with (NH4)2SO4 solution in 1:1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu2+ ion. Explain why.

When FeSO4is combined with (NH4)2SO4 in a 1: 1 molar ratio, a double salt is formed. FeSO4 (NH4)2SO4 .6H2O. This salt is in charge of supplying Fe 2+ . CuSO 4 in a 1:4 ratio with aqueous ammonia produces a complex salt. The complex salt fails the test because it does not ionize to produce Cu2+.

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