Question

# Ammonia and hydrogen chloride gases are mixed. Which type of chemical reactions do they give?

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Solution

## Reaction of ammonia and $\mathrm{HCl}$:When ammonia$\left({\mathrm{NH}}_{3}\right)$ reacts with Hydrogen chloride $\left(\mathrm{HCl}\right)$ , it results in the formation of salt i.e. Ammonium chloride $\left({\mathrm{NH}}_{4}\mathrm{Cl}\right)$.The chemical reaction can be depicted as: ${\mathrm{NH}}_{3}\left(\mathrm{g}\right)+\mathrm{HCl}\left(\mathrm{g}\right)\to {\mathrm{NH}}_{4}\mathrm{Cl}\left(\mathrm{s}\right)$It is a type of combination reaction because ammonia combines with Hydrogen chloride to form a single product i.e. Ammonium chloride.The general description of a combination reaction is: $\mathrm{X}+\mathrm{Y}\to \mathrm{XY}$

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