Question

Which of the following salt solution in pure water has pH equal to 7?

Options

• NH₄NO₃

• NH₄CI

• KNO₃

• KCN

Answer 1

KNO₃

Explanation:

Potassium nitrate (KNO₃) is a salt of strong base (KOH) and strong acid (HNO₃). When a salt of a strong acid and a strong base is dissolved in water, it gives neutral solution i.e., the pH of the solution is equal to 7.