Chapter 5, Problem 32E

Interpretation Introduction

Interpretation:

The compound which reacts with $\text{HCl(aq)}$ and produces a gas need to be explained with net ionic equation(s).

${\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}$

${\text{KHSO}}_{\text{3}}$

${\text{Zn(OH)}}_{\text{2}}$

${\text{CaCl}}_{\text{2}}$

Concept introduction:

The reaction in which acid and base reacts together to form salt and water is known as neutralization reaction. But, if the salt formed in the reaction is unstable then, it the salt decomposes into small neutral molecules.

Gas evolution reaction is one type of chemical reaction which produces a gas. There are few anions which react with $\text{HCl(aq)}$ and produce a gas. Anions like ${\text{SO}}_{\text{3}}{}^{\text{2-}}{\text{, HSO}}_{\text{3}}{}^{\text{-}}{\text{, HCO}}_{\text{3}}{}^{\text{-}}{\text{, CO}}_{\text{3}}{}^{\text{2-}}{\text{and S}}^{\text{2-}}$ reacts with ${\text{H}}^{\text{+}}$ from $\text{HCl(aq)}$ and produced gases like ${\mathrm{SO}}_2,C{O}_{2}and{H}_{2}S$ respectively.