NaOH which is having 25.49 ml were needed to neutralize the .5208g of KHP (m.w.204.33) dissolved in the water. This titration served to standardize the NaOH. The vinegar solution for titration was prepared in the following manner: 25 ml of vinegar were diluted to 250 ml in a volumetric flask and 25 ml of this diluted solution needed 22.62ml of the above standardized NaOH to reach the phenolphthalein endpoint.
a. Calculate the molarity of the NaOH solution used?
b. Calculate the percentage by mass of the acid in the original vinegar sample?