CHEMISTRY · Multi-part · AP · Chemistry · Acids and Bases · Acids and Bases
Problem
An unknown monoprotic acid, HX, has an acid-dissociation constant Ka=7.2×10−4 at 25∘C. A 25.0mL sample of 0.150M HX is titrated with 0.300M NaOH to the equivalence point.
(a) Calculate the volume of NaOH solution needed to reach the equivalence point.
(b) Determine the pH of the solution exactly at the equivalence point. Show all work leading to your numerical answer.