Question

What is the nature of the reaction when an aqueous $\mathrm{NaOH}$ solution is mixed with aqueous $\mathrm{HCl}$ solution?

Answer 1

Definition of neutralization reaction

A reaction of an acid with a base to form salt and water is known as a neutralization reaction. Here, the reaction of hydrochloric acid and sodium hydroxide (base) forms sodium chloride $\left(\mathrm{NaCl}\right)$ salt and water $\left({\mathrm{H}}_2\mathrm{O}\right)$

Reaction involved:

$\mathrm{HCl}\left(\mathrm{aq}\right)+\mathrm{NaOH}\left(\mathrm{aq}\right)\to \mathrm{NaCl}\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Therefore, the reaction between aqueous sodium hydroxide$\left(\mathrm{NaOH}\right)$ and aqueous hydrochloric acid$\left(\mathrm{HCl}\right)$ is an example of a neutralization reaction.