Lactic Acid, Which Is Found in Milk Products, Has a PK_a

question 91

Multiple Choice

Lactic acid, which is found in milk products, has a pK_a of 3.85. A 50.0 mL solution of 0.05 M lactic acid is titrated with 0.025 M sodium hydroxide. What is the pH of the solution after 64.0 mL of the sodium hydroxide has been added?

• A)3.85
• B)3.60
• C)9.90
• D)4.10
• E)7.00

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