Experiment 8 data sheet aspirin - WORLD OF CHEM LAB PDF

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Homework Assignment 1 - World of CHEM LAB 2020. HW Assignment 1 of semester containing the lab answers along with instructions. Provided in details....

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Experiment 8

Data sheet aspirin

Name___________________________________________________ Name___________________________________________________ Please Print your names grams salicylic acid actually used:________________________g mass of Aspirin obtained _______________________ g Theoretical Yield of Aspirin Your limiting reagent is the reagent that is present in the fewer amount of moles. (Look in lab to find the number of moles of each) Which is the limiting reagent? ______________________ Divide grams of salicylic acid you ACTUALLY used by '138.1 g salicylic acid/mole' to get moles salicylic acid. How many moles salicylic acid did you use? _____________ Theoretically, your limiting reagent should tell you how many moles of product you should get. In this reaction, you should obtain as many moles of aspirin as moles limiting reagent. How many moles aspirin should you theoretically obtain? (this is theoretical yield.) ________ Multiply this number by '180.1 g aspirin/mole' to figure out theoretical yield of aspirin in grams. Theoretical yield aspirin in grams. ___________________ Percent yield is: (actual yield/theoretical yield ) x 100 Percent yield = _________________________% Results of FeCl3 test on your Aspirin Place approximately 10-25 mg of your aspirin (this is a pinch on the end of your spatula) in clean 4" test-tube. Add about 4 mL of FeCl3 solution. Stir and record the color. Be specific. Color_______________________ What is the color of the FeCl3 solution? __________________________ Does your aspirin contain a lot of salicylic acid? Comment....