When copper (ii) sulphate solution is treated with excess ammonium hydroxide, a precipitate is first formed, and then this dissolves to give a deep blue solution. This deep blue solution is a
-
A.
Cu(OH)2 -
B.
CuSo4.5H2O -
C.
(NH4)2SO4 -
D.
Cu(NH3)4(OH)2 -
E.
CuSO4.(NH4)2SO4.2H2O