Ammonia is used in detection of `Cu^(2+)` ion because

Options

A. aqueous solution of `NH_(3)` reacts with `Cu^(2+)` ion to form deep blue coloured complex
B. `NH_(3)` reacts with `Cu^(2+)` ion to give blue precipitate of CuO
C. aqueous solution of `NH_(3)` reacts with `Cu^(2+)` ion to form white coloured complex
D. `NH_(3)` reacts with `Cu_(2+)` ion to give green precipitate.

Answer

A

Explanation

`Cu_((aq))^(2+)+4NH_(3(aq))rarrunderset("Deep blue")([Cu(NH_(3))_(4)]_((aq))^(2+))`