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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 (Ka (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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