If We Compare the Acid/base Properties of a 0

Multiple Choice

If we compare the acid/base properties of a 0.5 M solution of A ^- to a 0.5 M solution of HA, K _a = 1.0×10 ^{- 4}:

A) The A ^- solution is more acidic.
B) the pH of the A ^- solution is less.
C) the A ^- solution will be basic.
D) A ^- is the conjugate acid, and we need to know if K _a of A ^- is greater or less than K _a for HA.
E) none of these.