A chemist titrates 170.0 mL of a 0.6249M benzoic acid (HC6H₂CO₂) solution with 0.1372M NaOH solution at 25 °C. Calculate the pH at equivalence. The pk of benzoic acid is 4.20. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of NaOH solution added.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.