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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: babychico on November 20, 2019, 11:08:24 AM

Title: Aspirin
Post by: babychico on November 20, 2019, 11:08:24 AM

Please help...
Twenty tablets ( labelled 300 mg aspirin per tablet) had a total mass of 6.8g. The tablets were powdered and 0.54g
of powder was added to 30 mL of 0.498 M sodium hydroxide solution and the mixture boiled gently for 10 minutes. The excess alkali in the cooled solution was titrated with 0.494 M hydrochloric acid solution and 20.57 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 = 180.2

Title: Re: Aspirin
Post by: billnotgatez on November 20, 2019, 11:12:46 AM

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