Question

Give one example of a salt which gives an aqueous solution having:

pH more than 7

Answer 1

The K₂CO₃ is formed from a weak acid, carbonic acid (H₂CO₃), and a strong base, potassium hydroxide (KOH). On hydrolysis, K₂CO₃ forms more OH⁻ ions than H⁺ ions. Thus, it is basic, with a pH more than 7.