InterviewSolution
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InterviewSolution
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When aqueous ammonia is added to CuSO_4 solution, the solution turns deep blue due to the formation of tetramminecopper (II)complex, [Cu(H_2O)_4]_(aq)^(2+)+4NH_3(aq) hArr [Cu(NH_3)_4]_(aq)^(2+), among H_2O and NH_3 Which is stronger Lewis base. |
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Answer» Solution :In a complex ion, the metal ion has greater tendency to accept ELECTRONS and ACTS as Lewis acids and the ligand CAPABLE of donating electrons acts as a Lewis base. `[Cu(H_2O)_4]_(aq)^(2+)+4NH_(3aq) hArr [Cu(NH_3)_4]_(aq)^(2+)` In the above REACTION, ammonia replaces water molecules to form the tetraamine complex, so `NH_3` is a STRONGER base than `H_2O`. |
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