Question

The pH value of NaCl formed, when sodium hydroxide reacted with hydrochloric acid is :

• A. 7

Answer 1

The correct option is A 7
Hydrochloric acid reacts with sodium hydroxide to form sodium chloride and water.

${\mathrm{HCl}}_{\left(\mathrm{aq}\right)}+{\mathrm{NaOH}}_{\left(\mathrm{aq}\right)}\to {\mathrm{NaCl}}_{\left(s\right)}+H_2{O}_{\left(l\right)}$

Strong acid reacts with a strong base to form a neutral salt.

Hydrochloric acid is a strong acid and sodium hydroxide is a strong base.
Therefore sodium chloride formed is a neutral salt.

Strong acid + Strong base $\to$ Neutral salt + water

pH value of a neutral substance is 7.