A 100.00 mL buffer is prepared by dissolving 1.22 grams benzoic acid (pKa = 4.20, Molar Mass, μ = 122 g/mol) and 2.88 grams sodium benzoate (Molar Mass, μ = 144 g/mol) in an appropriate amount of water. i. What is the pH of the solution if 10.0 mL of 0.250 M HCl is added? ii. What is the pH of the solution if 5.00 mL of 0.250 M NaOH is added instead of HCl?

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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.