FIND THE PERCENTAGE YIELD, and include the moles of the reaction (part 2)

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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FIND THE PERCENTAGE YIELD, and include the moles of the reaction (part 2)

Part 2:
Running the reaction:
1.15 g of the acetanilide and 4.8 mL acetic acid were placed in a 50 mL Erlenmeyer flask
2.80 mL of 4.1 M bromine in acetic acid (1:4) were added dropwise with a Pasteur pipette.
The mixture was swirled until everything dissolved (~20 minutes)
The solution was transferred to a 150 mL beaker containing 30 mL of water
A solution of sodium bisulfite was added until the mixture was clear (~2 mL)
Product isolation:
The solids were isolated using a vacuum filtration with a small Büchner funnel, washed
with 5 mL of ice-cold water
The crude was dissolved in 6 mL of hot ethanol
Hot water (3 mL) was added which caused a solid to form
The mixture was allowed to cool to room temperature (~15 minutes) before being placed
in an ice bath (15 minutes)
White crystals were isolated by vacuum filtration and dried
Product characterization:
1.55 g of the product
М.р.: 164.8-166.2 °C
Transcribed Image Text:Part 2: Running the reaction: 1.15 g of the acetanilide and 4.8 mL acetic acid were placed in a 50 mL Erlenmeyer flask 2.80 mL of 4.1 M bromine in acetic acid (1:4) were added dropwise with a Pasteur pipette. The mixture was swirled until everything dissolved (~20 minutes) The solution was transferred to a 150 mL beaker containing 30 mL of water A solution of sodium bisulfite was added until the mixture was clear (~2 mL) Product isolation: The solids were isolated using a vacuum filtration with a small Büchner funnel, washed with 5 mL of ice-cold water The crude was dissolved in 6 mL of hot ethanol Hot water (3 mL) was added which caused a solid to form The mixture was allowed to cool to room temperature (~15 minutes) before being placed in an ice bath (15 minutes) White crystals were isolated by vacuum filtration and dried Product characterization: 1.55 g of the product М.р.: 164.8-166.2 °C
tool in organic chemistry, especially in multi-step synthesis. In this experiment, p-bromoaniline
was synthesized in three steps starting from aniline.
Equation 1:
NH2
NH,
Br-
Br
Br2
Br
plus mono-and disubstitution products
Equation 2:
NH2
NH
Equation 3:
`NH
NH
Br2
Br
Equation 4:
NH
NH2
Acid hydrolysis
Br
Br
Transcribed Image Text:tool in organic chemistry, especially in multi-step synthesis. In this experiment, p-bromoaniline was synthesized in three steps starting from aniline. Equation 1: NH2 NH, Br- Br Br2 Br plus mono-and disubstitution products Equation 2: NH2 NH Equation 3: `NH NH Br2 Br Equation 4: NH NH2 Acid hydrolysis Br Br
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