Question

State one relevant observation for the following:

When a crystal of Copper nitrate is heated in a test tube.

Answer 1

Explanation:

• Decomposition reactions are those reactions in which a compound splits up into two or simpler substances as products.
• Copper nitrate $\left(Cu{\left(N{O}_3\right)}_2\right)$ on heating decomposes to give Copper oxide $\left(CuO\right)$, Nitrogen dioxide $\left(N{O}_2\right)$, and Oxygen $\left(O_2\right)$ as products.
• The chemical reaction as follows.

$\underset{\mathrm{Copper}\mathrm{nitrate}}{2\mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2(\mathrm{s}})+\mathrm{Heat}(∆)\to \underset{\mathrm{Copper}\mathrm{oxide}}{2\mathrm{CuO}\left(\mathrm{s}\right)}+\underset{\mathrm{Nitrogen}\mathrm{dioxide}}{4{\mathrm{NO}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Oxygen}\mathrm{gas}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}$