mass of aspirin= 0.512 grams
Millimoles of 0.1 M NaOH (required to neutralize all acid)= 2.532mmol
Millimoles of 0.1 M NaOH (used in hydrolysis)= 4.300mmol
Milimoles of 0.1 HCl (used in back titration)= 1.558 mmol
Grams of acetylsalicyclic acid in sample= 0.4941grams
Percent aspirin= 96.5%
Q) From the above data, find the number of millimoles of acidic impurites and what is the ratio of acetylsalicyclic acid to other acid impurites?