An Acetic Acid-Sodium Acetate Buffer Is Prepared by Mixing 6

question 29

Multiple Choice

An acetic acid-sodium acetate buffer is prepared by mixing 6.00 g NaCH₃CO₂ with 4.00 mL of CH₃CO₂H (density = 1.042 g/mL) and diluting to 1.00 L.What is the pH of the resulting buffer? The K_a of acetic acid is 1.8 × 10−⁵.

• A) 4.10
• B) 4.77
• C) 4.99
• D) 5.19
• E) 5.78

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