Question

Identify the acid which matches the following description:

The acid which is used in the preparation of a non-volatile acid

Answer 1

1. Sulphuric acid $\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$ is used in the preparation of a non-volatile acids
2. Concentrated sulphuric acid$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$ has a high boiling point.
3. Therefore, it is considered a non-volatile acid. Due to this, it is used for preparing volatile acids like hydrochloric acid $\left(\mathrm{HCl}\right)$or nitric acid$\left({\mathrm{HNO}}_3\right)$ from their salts by double decomposition.
4. $$\begin{gathered} \mathrm{NaCl}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{l}\right)\to {\mathrm{NaHSO}}_4\left(\mathrm{l}\right)+\mathrm{HCl}\left(\mathrm{l}\right) \\ (\mathrm{Sulphuric}(\mathrm{Hydrochloric} \\ \mathrm{acid})\mathrm{acid}) \end{gathered}$$