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Question

f Facebook Call e https://moodle.clarkson.edu/pluginfile.php/600794/modr 2-aspirin%282018%29-prelabpdf Name See # CM131 Experiment 2 Pre-Lab Questions 1. Baryer Extra Strength aspirin tablets each contain 500 miligrams of acetylsalicylic acid. How many total moles of acetylsalicylic acid are present in a bottle of Bayer Extra Strength containing 50 tablets adult aspirin tablets? of acetic anhydride are present in a 5000 ml bottle of acetic anhydride? 3. In one experiment 4.80 grams of salicyic acid are reacted with excess acetic anhydride (ie. more than necessary). Calculate the theoretical yield of acetylsalicylic acid in grams. if the actual yield of the reaction was only 5.60 grams of acetylsalicylic acid what was the percent yield for the reaction

Explanation / Answer

Ans 1 :

Mass of acetyl salicylic acid in 1 bottle = 50 x 500 mg = 25000 mg or 25 g

The molar mass of acetylsalicylic acid is 180.157 g / mol

So number of moles = 25 / 180.157

= 0.139 mol

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