November 25, 2015

Homework Help: chemistry

Posted by kelis on Wednesday, January 12, 2011 at 2:26pm.

A 0.5130 g aspirin tablet which was dissolved in 95 percent ethanol required 27.98 mL of 0.1000 M NaOH for neutralization. Then an additional 42.78 mL of 0.1000 M NaOH was added and the soln was heated to hydrolyze the aceytlsalicyclic acid. After the reaction mixture was cooled, the excess base was back-titrated with 14.29 mL of 0.1056 M HCL. How many grams of acetylsalicylic acid are in the tablet? What % w/w of the tablet is acetylsalicyclic acid?

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