Potassium hydrogen phthalate KHC8H4O4 is used to standardize a solution of bases. The acidic anion reacts with stone bases according to the following net ionic equation.
HC8H4O4- (aq) + OH- (aq)-------> C8H4O4-2 ( aq) + H2O (l)
Determine the molar concentration of the NaOH if a .902 g sample of potassium hydrogen phthalate is dissolved in the water and titrated to the equivalence point with 26.45 mL of NaOH .