In Order to Make Up a Buffer Solution with a Neutral

Multiple Choice

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