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+} $
