P-Block Elements Ques 593

Question: The deep blue colour produced on adding excess of ammonia to copper sulphate is due to presence of

Options:

A) $ C{{u}^{2+}} $

B) $ {{[ Cu{{( NH_3 )}_4} ]}^{2+}} $

C) $ {{[ Cu{{( NH_3 )}_6} ]}^{2+}} $

D) $ {{[ Cu{{( NH_3 )}_2} ]}^{2+}} $

Show Answer

Answer:

Correct Answer: B

Solution:

$ CuSO_4+4NH_3\to [ Cu{{( NH_3 )}_4} ]SO_4 $ Blue complex due to $ Cu(NH_3)_4^{2+} $



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