Question

Which of the following salts will give an aqueous solution having pH of almost 7?

Options

• NH₄NO₃

• NH₄Cl

• CaCl₂

• KCl

Answer 1

KCl

Explanation:

KCl is formed from a strong acid, hydrochloric acid (HCl), and a strong base, potassium hydroxide (KOH). Thus, KCl, on hydrolysis, forms equal amounts of H⁺ and OH⁻ ions. This is why an aqueous solution of KCl shows a pH of almost 7.