JEE Main Chemistry question
The pH of 1.0 M aqueous solution of a weak acid HA is 6.0. Its dissociation constant is:
Answer: (B)
Solution
[H⁺]=10⁻⁶; Ka≈(10⁻⁶)²/1.0=10⁻¹².
The pH of 1.0 M aqueous solution of a weak acid HA is 6.0. Its dissociation constant is:
[H⁺]=10⁻⁶; Ka≈(10⁻⁶)²/1.0=10⁻¹².