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

Question

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

Infinity Learn · Accepted Answer

A weak acid and its conjugate base $$HPO42$$−.  For acidic buffer when  [salt]  [acid] $$=110$$, then $$pH=pKa$$−$$1So$$, weak acid may be used for preparing buffer solution having pH values lying within the range pKa $$+$$ $$1$$ and pKa $$-$$ $$1$$. The acetic acid has a pKa of about $$4.8$$, it may, therefore, be used for making buffer solutions with pH values lying roughly within the range $$3.8$$ to $$5.8$$.Buffer capacity is maximum when [salt] $$=$$ [base]i.e., pOH $$=$$ pKb for base buffer under above condition. the buffer is called efficient.

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