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Please fill in the table And calculate the Percent Yield

Please fill in the table And calculate the Percent Yield

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please fill in the table And calculate the Percent Yield
Can you find out why? Procedure To a 50 mL round-bottomed flask equipped with a stir bar add paraformaldehyde (0.30 g) and 95% formic acid (2 mL). Equip a condenser, stir the mixture, and heat gently using a heating mantle. After boiling for 5 min, add mesitylene (4 mL) from the top of the condenser. Reflux the mixture for 2 hours. Remove the heat and let the reaction cool to room temperature. Place the flask in an ice bath to promote crystal formation. Vacuum filter the crystals, you may need to use a spatula to break the big chunks. Rinse the flask with water (2 x 5 mL) to transfer all the solids. Wash the solids with sodium bicarbonate solution (5 mL) and then again with water (5 mL). Lastly, wash the crystals with ice-cold methanol (5 mL) to remove the unreacted mesitylene. Allow the solids to dry on your bench for 15 min. Obtain the mass and the melting point. bloid al Using a separatory funnel, separate the organic and aqueous layers and discard each in the appropriate waste container. Dimesitylmethane is a symmetric molecule and will give a simple and rather uninteresting 1H NMR. Your instructor will decide if you need to run an NMR or perform a civic engagement assignment.
Transcribed Image Text:Can you find out why? Procedure To a 50 mL round-bottomed flask equipped with a stir bar add paraformaldehyde (0.30 g) and 95% formic acid (2 mL). Equip a condenser, stir the mixture, and heat gently using a heating mantle. After boiling for 5 min, add mesitylene (4 mL) from the top of the condenser. Reflux the mixture for 2 hours. Remove the heat and let the reaction cool to room temperature. Place the flask in an ice bath to promote crystal formation. Vacuum filter the crystals, you may need to use a spatula to break the big chunks. Rinse the flask with water (2 x 5 mL) to transfer all the solids. Wash the solids with sodium bicarbonate solution (5 mL) and then again with water (5 mL). Lastly, wash the crystals with ice-cold methanol (5 mL) to remove the unreacted mesitylene. Allow the solids to dry on your bench for 15 min. Obtain the mass and the melting point. bloid al Using a separatory funnel, separate the organic and aqueous layers and discard each in the appropriate waste container. Dimesitylmethane is a symmetric molecule and will give a simple and rather uninteresting 1H NMR. Your instructor will decide if you need to run an NMR or perform a civic engagement assignment.
Calculate the theoretical yield and fill in the reagents table below: Substance Mass (g) MW (g/mol) Mmol Equivalents Para- formaldehyde Formic Acid 95% Mesitylene Dimesityl- methane 0.30g 9.5 mL 4ml Theo. -
Transcribed Image Text:Calculate the theoretical yield and fill in the reagents table below: Substance Mass (g) MW (g/mol) Mmol Equivalents Para- formaldehyde Formic Acid 95% Mesitylene Dimesityl- methane 0.30g 9.5 mL 4ml Theo. -
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