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pH and buffer capacity of buffered solution

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Short answer:

A) pH of a buffer is determined by :

B) buffer capacity is determined by :

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A) The pH of a buffer is determined by two factors; 1) The equilibrium constant Ka of the weak acid and 2) the ratio of ...

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It explains the pH and buffer capacity of buffered solution.

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Maximum buffer capacity: Example problem

The question is attached.

Starting with equation (8.5) show that the maximum buffer capacity occur at pH=pKa.
The units of buffer capacity are mol L^-1. As a consequence of the definitions, buffer capacity is always a positive quantity. For a monoprotic acid the buffer capacity (as a function of pH) is given by: (see attachment).

The buffer capacity depends n both the pH of the buffer and the concentrations of the components of the buffer.

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