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Benzoic Acid (C6H5CO2H = HBz)solutions Are Sometimes Used in Experiments

Question 101

Multiple Choice

Benzoic acid (C6H5CO2H = HBz) solutions are sometimes used in experiments to determine the molarity of a basic solution of unknown concentration.What is the pH of a 0.100 M solution of benzoic acid if Ka = 6.5 × 10-5 and the equilibrium equation of interest is HBz(aq) + H2O(l) ⇌ H3O+(aq) + Bz-(aq) .


A) 1.00
B) 2.59
C) 4.19
D) 5.19

Correct Answer:

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