AP Chemistry
8.7 pH and pKa
A student prepares an aqueous solution of lactic acid, \(\text{HC}_3\text{H}_5\text{O}_3\text{(aq)}\) (\(p K_a = 3.86\)), and adjusts its pH to \(5.20\) by adding a small amount of \(\text{NaOH(aq)}\). Which species, \(\text{HC}_3\text{H}_5\text{O}_3\text{(aq)}\) or \(\text{C}_3\text{H}_5\text{O}_3^-\text{(aq)}\), is present at a higher concentration in the solution, and why?
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