Question

pH of a solution containing 0.3 M HX and 0.1M X⁻ ($K_b$ for X– = 1.0 × 10⁻⁵) is –
(a) 5 + log 3
(b) 5 – log 3
(c) 9 – log 3
(d) 9 + log 3

Answer 1

a) is absolutely correct