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Lactic acid (HC3H5O3), a weak monoprotic acid with a Ka = 1.4 x 10-4, is titrated...

Lactic acid (HC3H5O3), a weak monoprotic acid with a Ka = 1.4 x 10-4, is titrated with KOH. If you have 50.0 mL of a 0.500 M HC3H5O3solution, calculate the pH after 150.0 mL of 0.250 M KOH have been added:

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