Which pair(s) of substances would make a suitable buffer pair ?
I. HCl and NaCl
II. HF and NaF
III. NH₄Cl and NH₃

Question

Which pair(s) of substances would make a suitable buffer pair ? I. HCl and NaCl II. HF and NaF III. NH₄Cl and NH₃

Quizplus · Accepted Answer

A suitable buffer pair consists of a weak acid and its conjugate base or a weak base and its conjugate acid. HF is a weak acid and NaF is its conjugate base, making them a suitable buffer pair. The substances in option III represent a weak base and its conjugate acid, also making them a suitable buffer pair. HCl is a strong acid and NaCl is its salt, which does not make a suitable buffer pair because strong acids fully dissociate in water and do not form buffers.

Which Pair(s) of Substances Would Make a Suitable Buffer Pair