Spilled amount ml 10 mmoles 045 041 081 041 ty na ey

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(spilled) amount (mL) 1.0 mmoles 0.45 0.41 0.81 0.41 (TY) N/A (EY) (spilled) molar mass 178.23 98.06 106.16 276.30 density 0.86 lit. bp (°C) 137-140 lit. mp (ºC) 216 60 261-262 Observations :
The solution is yellow in color at the bottom of the flask before being heated The product solution becomes clear after being heated The final isolated product is a white solid Calculation: 1) Theoretical yield of 9,10-dihydroanthracene-9,10- α,β -succinic acid anhydride .040 gmaleic anhydride× mol 98.06 gmaleic anhyride × 1 mol produc t ¿ 1 mol maleic anhydride × 276.30 g produc t ¿ mol × 1000 mg 1 g = 11 *9,10-dihydroanthracene-9,10- α,β -succinic acid anhydride 2) Yield of 9,10-dihydroanthracene-9,10- α,β -succinic acid anhydride Could not be calculated due to spillage of the product. 3) % Yield of 9,10-dihydroanthracene-9,10- α,β -succinic acid anhydride Could not be calculated due to spillage of the product. Questions : 1. Write a mechanism for the Diels-Alder reaction of anthracene and maleic anhydride. Be as complete as possible and show electron flow for all steps. 2. The internal reaction temperature (in other words, the temperature of the reaction mixture inside the reaction flask) of this Diels-Alder experiment may be specified by the term reflux .

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