Question

Name the drying agent for $\mathit{H}\mathit{C}\mathit{l}$ gas.

Answer 1

1. Hydrogen Chloride ($\mathit{H}\mathit{C}\mathit{l}$ ) gas is prepared by the reaction of concentrated Sulfuric acid (${\mathit{H}}_{\mathbf{2}}\mathit{S}{\mathit{O}}_{\mathbf{4}}$) and Sodium Chloride ($\mathit{N}\mathit{a}\mathit{C}\mathit{l}$).
2. Drying Agents. Drying agents (also called desiccants) come in various forms and have found widespread use in the foods, pharmaceuticals, packing, electronics and many manufacturing industries. A desiccant is a hygroscopic substance that induces or sustains a state of dryness in its vicinity.
3. The reaction to the preparation is, $\underset{Sodiumchloride}{NaCl\left(s\right)}+\underset{Sulfuricacid}{H_{2}S{O}_4\left(l\right)}\to \underset{Sodiumhydrogensuifate}{NaHS{O}_4\left(l\right)}+\underset{Hydrochloricacid}{HCl\left(l\right)}$
4. The obtained Hydrogen chloride gas is then dried using concentrated Sulfuric acid.
5. So the drying agent is concentrated Sulfuric acid.