If an excess of NH_4OH is added to a CuSO_4 s | vedclass

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Question

(A) When $NH_4OH$ is added to $CuSO_4$ solution,initially a pale blue precipitate of $Cu(OH)_2$ is formed. Upon adding an excess of $NH_4OH$,this prec

Vedclass · Accepted Answer

$[Cu(NH_3)_4]SO_4$

Vedclass · Answer

(A) When $NH_4OH$ is added to $CuSO_4$ solution,initially a pale blue precipitate of $Cu(OH)_2$ is formed. Upon adding an excess of $NH_4OH$,this precipitate dissolves to form a deep blue coloured complex,tetraamminecopper$(II)$ sulfate. The balanced chemical equation is: $CuSO_4 + 4NH_4OH 	o [Cu(NH_3)_4]SO_4 + 4H_2O$. Thus,the correct option is $A$.

If an excess of $NH_4OH$ is added to a $CuSO_4$ solution,it forms a deep blue coloured complex which is:

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