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Is lactic acid or citric acid stronger?

In: Acids & Bases [Edit categories]

Answer:

Well, citric acid is a tri-protic weak acid, 1^st pK_a1=3.09, 2^nd pK_a2=4.75 and 3^rd pK_a3=5.41.
Lactic acid is mono protic weak: pKa 3.86
So lactic acid is weaker than the first (most important, 3.09) one of citric acid.

First answer by JoppeDeQuint. Last edit by JoppeDeQuint. Contributor trust: 170 [recommend contributor ]. Question popularity: 2 [recommend question].

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