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A 0.421 g sample of aspirin prepared in the laboratory is dissolved in 95% ethanol, diluted in water, and titrated to the phenolphthalein endpoint with 17.3 mL of 0.114 M NaOH.
1. How many moles of acetylsalicyclic acid (molar mass=180.2 g/mol) are present in the sample?
2. Calculate the percent purity of acetylsalicyclic acid in the aspirin sample.
1. How many moles of acetylsalicyclic acid (molar mass=180.2 g/mol) are present in the sample?
2. Calculate the percent purity of acetylsalicyclic acid in the aspirin sample.