The Material Safety Data Sheets (MSDS) for all the chemicals involved in this la

Question

The Material Safety Data Sheets (MSDS) for all the chemicals involved in this lab are on I Learn. Read these and answer the following questions: Which chemical is the most dangerous in this lab? Explain why you chose your answer for part a), and the safety precautions you will take when handling this material. Fill in the reaction table below. Make sure you correctly calculate the molar amounts of your reactive materials. Based on your answers to Q2, which is the limiting reagent in this reaction? Calculate the Theoretical Yield of your product, i.e. the mass you would expect to recover, assuming 100% conversion to product.

Explanation / Answer

1 mol of 3-sulfolene reacts with 1 mol of maleic anhydride. So, 1.00 mol eq reacts with 1 mol eq of maleic anhydride.

Moles = amount/Mw

Product is formed by diel's alder reaction with evolution of SO2.

3) The limiting reagent is maleic anhydride, because the moles of maleic anhydride is less than 3-sulfolene.

4) Theoretical yield:

Moles of product = moles of maleic anhydride = 7.63 mmol

Mol wt of product = 152 g/mol

Mass of product formed = moles*mol wt = 0.00763*152 = 1.16 g

name formula mol-eq Mw mmol amount 3-sulfolene C4H6O2S 1.00 118 10.60 1.25 g Maleic anhydride C4H2O3 1.00 98 7.65 750 mg Xylene C8H10 -- -- -- 0.5 ml Toluene C7H8 -- -- -- 7 ml Pet ether -- -- -- -- 1 ml product C8H8O3 1.00 152 7.65 1.16 g

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