Question 1(2015)State one appropriate observation for — When crystals of copper nitrate are heated in a test tube.

Question

Accepted Answer

Reddish brown nitrogen dioxide gas is evolved.

Black coloured residue of CuO is obtained in the test tube.

$2\text{Cu(NO}_3)_2 \xrightarrow{\Delta} 2\text{CuO} + \text{O}_2 + 4\text{NO}_2$

Study of Compounds — Nitric Acid — Question 47