Question

Select the correct word from the list given in the bracket for each of the following statements.

A metal which react with dilute Nitric acid is _________ (Mn/ Zn/ Cu).

Answer 1

1. A metal which react with dilute Nitric acid is Manganese.
2. Nitric acid is a strong oxidising agent.
3. Manganese reacts with dilute Nitric acid to liberate Hydrogen gas along with the formation of Manganese (II) nitrate.
4. The chemical reaction is as follows:
   $\underset{(\mathrm{Manganese}}{\mathrm{Mn}\left(\mathrm{s}\right)}+\underset{(\mathrm{Nitric}\mathrm{acid})}{2{\mathrm{HNO}}_3}\left(\mathrm{aq}\right)\to \underset{(\mathrm{Manganese}\mathrm{nitrate})}{\mathrm{Mn}{\left({\mathrm{NO}}_3\right)}_2\left(aq\right)}+\underset{(\mathrm{hydrogen}\mathrm{gas})}{{\mathrm{H}}_2\left(\mathrm{g}\right)}$
5. Therefore, a metal which reacts with dilute Nitric acid is $\mathbf{Mn}$.