A 100 mL buffer solution consists of 0.60 M lactic acid (HC3H5O3) and 0.60 M lactate ion (C3H503). What is the pH after 5.0 mL of 1.00 M hydrochloric acid is added to the buffer solution? (The K₂ of HC3H5O3 is 1.4 ×104.)

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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.