8. Construct potentiometric titration curves in the pH-V and ΔpH/ΔV-V coordinates and determine the concentration (mol * l-1) of the CH3COOH solution, if the following results were obtained when titrating 10.00 ml of this acid with 0.1000 M KOH:
V, ml (KOH) 10.0 13.0 14.0 14.5 14.9 15.0 15.1 15.5 16.0
pH 5.05 5.56 5.88 6.19 6.92 8.82 10.59 11.29 11.58

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