What is the CRUDE PRODUCT, and the crude EXPERIMENTAL YIELD in this experiment. Ph1. NaOH, MW2. НСIH2NNH2HN,NHPhMajorMinor Experiment 10: Microwave Chemistry-Synthesis of Phenytoin (Data Sheet)Running the reaction0.70 g of urea, 1.30 g of benzil, and 0.61 g of sodium hydroxide were ground together in amortar yielding a yellow powerThe mixture was transferred to a 25 mL beakerAfter covering the beaker with a watch glass, it was placed in the microwave and heatedfor 90 seconds with 280 WattThe mixture melted and turned pale yellowProduct isolationAfter cooling, the mixture is transferred to a mortar and ground into a powderThe solids were extracted twice with 5 mL of 95 % ethanolThe combined organic layers were placed in a beaker and 4 mL of 6 M HCl addeddropwise; the pH value was below pH=2 and a white precipitate was formedThe solids were isolated by vacuum filtration using a Hirsch funnel and rinsed with 2 mL95 % ethanolThe crude was recrystallized from 10 mL of ethanol:water (8:2)The fine needles were isolated by vacuum filtration using a Hirsch funnel and rinsed with1 mL 95 % ethanolProduct characterization1.65 g of the crude product1.25 g of the final productM.p.: 296.5-299.2 °C

From the reaction it is clear that one mole benzil reacts with one mole urea to give one mole…

Answered: What is the CRUDE PRODUCT, and the…

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What is the CRUDE PRODUCT, and the crude EXPERIMENTAL YIELD in this experiment.

Appl Of Ms Excel In Analytical Chemistry

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Chapter12: Spectrochemical Methods

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Problem 7P

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Question

100%

What is the CRUDE PRODUCT, and the crude EXPERIMENTAL YIELD in this experiment.

Ph
1. NaOH, MW
2. НСI
H2N
NH2
HN,
NH
Ph
Major
Minor

Experiment 10: Microwave Chemistry-Synthesis of Phenytoin (Data Sheet)
Running the reaction
0.70 g of urea, 1.30 g of benzil, and 0.61 g of sodium hydroxide were ground together in a
mortar yielding a yellow power
The mixture was transferred to a 25 mL beaker
After covering the beaker with a watch glass, it was placed in the microwave and heated
for 90 seconds with 280 Watt
The mixture melted and turned pale yellow
Product isolation
After cooling, the mixture is transferred to a mortar and ground into a powder
The solids were extracted twice with 5 mL of 95 % ethanol
The combined organic layers were placed in a beaker and 4 mL of 6 M HCl added
dropwise; the pH value was below pH=2 and a white precipitate was formed
The solids were isolated by vacuum filtration using a Hirsch funnel and rinsed with 2 mL
95 % ethanol
The crude was recrystallized from 10 mL of ethanol:water (8:2)
The fine needles were isolated by vacuum filtration using a Hirsch funnel and rinsed with
1 mL 95 % ethanol
Product characterization
1.65 g of the crude product
1.25 g of the final product
M.p.: 296.5-299.2 °C

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