A buffer contains 0.200 mol of lactic acid (CH3CH(OH)COOH) and 0.300 mol of sodium lactate (CH3CH(OH)COONa) in 1.00 L. Calculate the pH of this buffer after 0.020 mol of NaOH is added. The Ka of lactic acid is 1.4 x 10-4.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.