Question

Which of the following is CORRECT for an aqueous solution of NH₄CN?

[K_a of HCN = 4.0 × 10⁻¹⁰, K_b for NH₄OH = 1.8 × 10⁻⁵]

Options

• The solution turns blue litmus red.

• The solution is neutral.

• The solution contains equal concentration of H₃O⁺ and OH⁻ ions.

• The solution is basic.

Answer 1

The solution is basic.

Explanation:

Since K_a < K_b, the solution will be basic.