Q.45 A blue solution of copper sulphate becomes darker when ... — Chemistry1 | Mockzy

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Q.45 A blue solution of copper sulphate becomes darker when treated with excess of ammonia. This is because –

ammonia molecules replace water molecules in the solution

ammonia is stronger ligand than water

ammonia forms a stable complex ion [Cu(NH3)4]2+ with Cu2+ ions

All are correct

Q.44 The order of stability of complexes of ion Cu+2, Ni+2, Mn+2 and Fe+2 decrea

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