Question

1. Consider a buffer solution containing an acid with a pKa of 2.3 and an acid concentration that is one-fourth the concentration of the conjugate base. What is the pH of the solution?

2. Calculate the pH of a buffer containing 0.1 M sodium acetate and 0.2 M acetic acid (pKa= 4.76).

3. The pH of the given solution of lactic acid and lactate is 4.30. Calculate the pKa of lactic acid, when the concentration of lactic acid and lactate are 0.020 M and 0.073 M respectively.

Answer 1

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