Question

Complete the following reaction:

Hydrochloric acid + Calcium hydroxide $\to$

• A. No reaction
• B. Calcium chloride + Water
• C. Calcium chlorite + Water
• D. Calcium chlorate + Water

Answer 1

The correct option is B Calcium chloride + Water

Hydrochloric acid + calcium hydroxide $\to$ Calcium chloride+water

$2HCl\to 2H^{+}+{2Cl}^{-}$

As $HCl$ gives $H^{+}$ in water, it is an acid (Arrhenius Theory)

$Ca{\left(OH\right)}_2\to {Ca}^{+2}+{2OH}^{-}$

As $Ca{\left(OH\right)}_2$ gives $O{H}^{-}$ in water, it is a base (Arrhenius Theory)

Hence it is a neutralisation reaction.

Neutralisation equation

$Acid+Base$ $\to$$Salt+water$

so, the net equation will be:

$2HCl+Ca(OH{)}_2⟶CaC{l}_2+2H_{2}O$

Hence, the option $\left(B\right)$ is correct.