First slide
Acidic buffer
Question

Buffer capacity of an acidic buffer solution is maximum when

a) pH = pKa                               (b) [salt] = [acid]

c) pKa = 7                          d) [H+] = pKa

Easy
Solution

Buffer capacity of an acidic buffer is maximum when the concentration of salt and acid are equal.

{P^H} = {P^{{K_a}}} + \log \frac{{\left[ {salt} \right]}}{{\left[ {acid} \right]}}= {P^{{K_a}}}

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