54. Solving a chemistry problem

98. Construct potentiometric titration curves in the coordinates pH - V and V pH ∆ ∆ - V and determine the concentration of CH3COOH solution (g / l), if when titrating 10.0 ml of this acid with 0.10 M KOH solution according to the following data:
V(NaOH), ml 10.00 13.00 14.00 14.50 14.90 15.00 15.10 15.50 16.00
pH 5.05 5.56 5.88 6.19 6.92 8.82 10.59 11.29 11.58