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Coordinated science (double award) C1 notes
Notes aligned to Cambridge IGCSE syllabus points
£0.55 Preview RemoveCHM 2354 Aspirin Lab analytical chemistry
The purpose of this experiment was to determine the amount of acetylsalicylic acid contained in an aspirin tablet as a percent-weight concentration. To do this we titrated two acetyl salicylate solutions (one solution made using dissolved aspirin tablets in NaOH and the other using aspirin powder dissolved in NaOH) with standardized HCl. Using the data collected during these titrations, it can be calculated that each tablet contains approximately 80% acetylsalicylic acid. Determining that each tablet contains a high concentration of acetylsalicylic acid is important because the main beneficial properties of aspirin are caused by the presence of acetylsalicylic acid.
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