Problem: A student is asked to prepare a buffer solution at pH = 8.60 using one of the following weak acids: HA (Ka = 2.7 x 10-3), HB(Ka= 4.4x10-6), HC (Ka = 2.6 x 10-9), Which acid should she choose?

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A student is asked to prepare a buffer solution at pH = 8.60 using one of the following weak acids: HA (Ka = 2.7 x 10-3), HB(Ka= 4.4x10-6), HC (Ka = 2.6 x 10-9), Which acid should she choose?

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Based on our data, we think this problem is relevant for Professor Tiani's class at UNC.