Potassium sorbate, KC₆H₇O₂ (molar mass 150. g/mol) is commonly added to diet soft drinks as a preservative. A stock solution of KC₆H₇O₂(aq) of known concentration must be prepared. A student titrates 45.00 mL of the stock solution with 1.25 M HCl(aq) using both an indicator and a pH meter. The value of K_a for sorbic acid, KC₆H₇O₂, is 1.7 x 10⁵.

e. The initial pH and the equivalence point are plotted on the graph below. Accurately sketch the titration curve on the graph below. Mark the position of the half-equivalence point on the curve with an X

e. The initial pH and the equivalence point are plotted on the graph below. Accurately sketch the titration curve on the graph below. Mark the position of the half-equivalence point on the curve with an X 12 10 8 pH 6 2 2 0+ 0 40 10 20 30 Volume of 1.25 M HCI Added (mL)