Question

A list of solutions is given below:

Aqueous solution of sodium chloride, acetic acid, lemon juice and an aqueous solution of ammonia.

Select a solution having pH equal to 7.

Answer 1

• pH : A pH is a number that indicates the strength of the acidic or basic nature of a solution.
• Higher the hydronium ion $\left({\mathrm{H}}_3{\mathrm{O}}^{+}\right)$ concentration, the lower the pH value.
• The pH of a neutral solution is 7.
• pH less than 7 represents an acidic solution.
• pH more than 7 represents a basic solution.

Out of the given solutions, Sodium Chloride $\left(\mathrm{NaCl}\right)$ solution has a pH equal to 7 because it is a neutral solution.