In order to make up a buffer solution with a neutral pH, it would be best to make use of A) a weak acid with a K_a at or near 1.00 × 10⁷ and its conjugate base B) a weak acid with a pK_a near 7.00 or a K_a near 1.00 × 10^-7 and its conjugate base C) an equimolar mixture of a strong acid and a strong base D) an equimolar mixture of an extremely weak acid and an extremely strong base E) an equimolar mixture of NaCl and HCl

Question

Quizplus · Accepted Answer

A buffer solution with a neutral pH can be achieved with a weak acid and its conjugate base. Option B suggests using a weak acid with a pK_a near 7.00 or a K_a near 1.00 × 10^-7, which would enable the buffer to resist changes in pH around a neutral value. Options A, C, D, and E do not suggest using the appropriate components to establish a buffer solution with a neutral pH.

In Order to Make Up a Buffer Solution with a Neutral