Using a PH meter; the PH of cranberry juice cocktail was found to be 2046 which indicate that the [H3O+]=3047 x10^-3 M. Titration of a 1.0mL sample of the juice to approximately ph required 0.94mL of 0.10M NAOH, indicating a total acid content of 0.094M. Give a plausible explanation for why these two numbers don't agree.