A sample of .1276 g of an unknown monoprotic acid was dissolved in 25 mL if water and titrated with .0633 M NaOH solution. the volume of the base required to bring the solution to the equivalence point was 18.40 mL.
A. calculate the molar mass of the acid. B. After 10.00 mL of base had been added during the titration, the pH was found to be 5.87. What is the Ka of the unknown acid?