Higher the amount of acid or base used to produce a definite change of pH in a buffer solution, higher will be its buffer capacity.Buffer capacity is maximum under the following conditions.[Salt] = [Acid] for acid buffer solution and [Salt] = [Base] for basic buffer solution.pH of a buffer lies in the range of pka±1. Any buffer solution can be used as buffer up to two units depending on pka or pkb values. When pH = pka or pkb solution is said to be efficient buffer.For preparing a buffer solution of pH = 7.0, which of the buffer system will be selected?A buffer of acetic acid pKa≈4.8with sodium acetate will be, when CH3COOH and CH3COONa are present in equivalent amounts has pH limits equal to:Buffer capacity is maximum when