Starting with 0

question 142

Multiple Choice

Starting with 0.750L of a buffer solution containing 0.30 M benzoic acid (C₆H₅COOH) and 0.35 M sodium benzoate (C₆H₅COONa) , what will the pH of the solution be after the addition of 340.0 mL of 0.350M HCl (K_a (C₆H₅COOH) = 6.5 x 10^-5)

• A) 4.19
• B) 4.25
• C) 3.81
• D) 0.45
• E) 6.54

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