MCQ
Which one of the following pairs of solution is not an acidic buffer?
  • A
    $CH_3COOH$ and $CH_3COONa$
  • B
    $H_2CO_3$ and $Na_2CO_3$
  • C
    $H_3PO_4$ and $Na_3PO_4$
  • $HClO_4$ and $NaClO_4$

Answer

Correct option: D.
$HClO_4$ and $NaClO_4$
d
A buffer solution is one which resists changes in $\mathrm{pH}$ when small quantities of an acid or an alkali are added to it.

$\mathrm{HClO}_{4}$ and $\mathrm{NaClO}_{4}$ are not an acidic buffer because strong acid with its salt cannot form buffer solution.

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