Question

Name the gas produced when the copper reacts with concentrated nitric acid.

Answer 1

1. The reaction of Copper with concentrated Nitric acid results in the formation of Copper( II) nitrate and Nitrogen gas is released.
2. The red-brown nitrogen dioxide and a concentrated solution of copper (II) nitrate of blue color is formed when the copper reacts with concentrated nitric acid.
3. The reaction is given below:

$\mathrm{Cu}\left(\mathrm{s}\right)+4{\mathrm{HNO}}_3\left(\mathrm{aq}\right)\to \mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)+2{\mathrm{NO}}_2(\mathrm{g})+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

The gas produced when the copper reacts with concentrated nitric acid is Nitrogen dioxide.