A certain buffer solution contains equal concentration of X - and HX . The K a for HX is 1 0 - 8 . The pH of the buffer is

Question

A certain buffer solution contains equal concentration of X - and HX . The K a for HX is 1 0 - 8 . The pH of the buffer is,

MARKS App · Accepted Answer

The Henderson equation is p H = p K a + log ⁡ C o n j u g a t e base A c i d = - log ⁡ K a + log ⁡ X - H X Hence, [ H X ] = X - = - log ⁡ ( 1 0 - 8 ) + log ⁡ 1 or pH = 8.0.

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