Question

Define the ionic product of water. Give its value at room temperature.

Answer 1

1. The product of the concentration of H⁺ and OH^– ions in water at a particular temperature is known as an ionic product.

2. The ionic product of water at room temperature (25°C) is,

K_w = [H⁺] [OH⁺] (or)

K_w = [H₃O⁺] [OH⁺]

K_w = (1 × 10⁻⁷) (1 × 10⁻⁷)

K_w = 1 × 10⁻¹⁴ mol² dm⁻⁶