Question: A student is asked to prepare a buffer solution at pH = 8.60, using one of the following weak acids: HA (Ka = 2.7

A student is asked to prepare a buffer solution at pH = 8.60, using one of the following weak acids: HA (Ka = 2.7 × 10-3), HB (Ka = 4.4 × 10-6), HC (Ka = 2.6 × 10-9). Which acid should she choose? Why?

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