Twenty tablets (labelled 300 mg aspirin per tablet) had a total mass of 6.9117 g. The tablets were powdered and 0.5423 g of powder was added to 30.0 mL 0.494 M sodium hydroxide solution and the mixture boiled gently for 10 minutes. The excess alkali in the cooled solution was titrated with 0.475 M hydrochloric acid solution and 20.25 mL required for neutralization. Given that aspirin (C9H8O4) and NaOH react in a 1:2 ratio calculate the percentage of aspirin as compared to the labelled claim.Aspirin Mr(C9H8O4) = 180.2 Twenty tablets (labelled 300 mg aspirin per tablet) had a total mass of 6.9117 g. The tabletswere powdered and 0.5423 g of powder was added to 30.0 mL 0.494 M sodium hydroxidesolution and the mixture boiled gently for 10 minutes. The excess alkali in the cooled solutionwas titrated with 0.475 M hydrochloric acid solution and 20.25 mL required for neutralization.Given that aspirin (C9H8O4) and NaOH react in a 1:2 ratio calculate the percentage of aspirinas compared to the labelled claim.Aspirin Mr(C9H8O4) = 180.2Answer: 7.8105 X

The objective of this question is to explain concept of stoichiometry to determine the percentage of…

Answered: Twenty tablets (labelled 300 mg aspirin…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 94AP

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Twenty tablets (labelled 300 mg aspirin per tablet) had a total mass of 6.9117 g. The tablets were powdered and 0.5423 g of powder was added to 30.0 mL 0.494 M sodium hydroxide solution and the mixture boiled gently for 10 minutes. The excess alkali in the cooled solution was titrated with 0.475 M hydrochloric acid solution and 20.25 mL required for neutralization. Given that aspirin (C₉H₈O₄) and NaOH react in a 1:2 ratio calculate the percentage of aspirin as compared to the labelled claim.

Aspirin M_r(C₉H₈O₄) = 180.2

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