A buffer contains a weak acid, HA, and its conjugatebase. The weak acid has a pKa of 4.5, and the buffer has apH of 4.3. Without doing a calculation, state which ofthese possibilities are correct at pH 4.3. (a) [HA] = [A-],(b) [HA] > [A-], or (c) [HA] < [A-].

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A buffer contains a weak acid, HA, and its conjugate
base. The weak acid has a pKa of 4.5, and the buffer has a
pH of 4.3. Without doing a calculation, state which of
these possibilities are correct at pH 4.3. (a) [HA] = [A-],
(b) [HA] > [A-], or (c) [HA] < [A-].

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