supplementary lab question
semester 2 Organic Chemistry
Fischer Esterification lab
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supplementary lab question
semester 2 Organic Chemistry
Fischer Esterification lab
A student observed that when 4-hydroxybutanoic...
A student observed that when 4-hydroxybutanoic acid is refluxed in the presence of sulfuric acid, an...
A student observed that when 4-hydroxybutanoic acid is refluxed in the presence of sulfuric acid, an ester formed. However, under the same conditions 3-hydroxypropanoic acid does not yield an ester. Explain this students observation.
Organic chemistry lab performing small scale Fisher esterification to make a variety of esters. 1) If...
Organic chemistry lab performing small scale Fisher esterification to make a variety of esters. 1) If you were doing these experiments on a larger scale, describe two ways that you could improve the yield of the target ester. 2) What is the point of adding sulfuric acid to the reaction? How about the heat? 3) Write the mechanism for the formation of wintergreen with 0.20g of anthranilic acid, 6 drops of methanol and one drop of H2SO4, then heated for...
TA Name: Student Name Fischer Esterification Post-Lab Questions: 3. Provide the appropriate starting materials and reagents...
TA Name: Student Name Fischer Esterification Post-Lab Questions: 3. Provide the appropriate starting materials and reagents needed to form the following compounds via a Fischer esterification: a. 3-ethyl-2-methylpentyl 3-methylhexanoate b. (2-methylcyclopentyl)methyl 2,4-dimethylpentanoate SSSSSSSSSSSSSSSSSSSSETITIITTITTIERRARI 4. Explain how concentrated sulfuric acid catalyzes the Fischer esterification reaction? Use reactive intermediate structures to explain your reasoning in detail: Page 109
combinatorial chemistry; ester synthesis Fundamentals of Organic Chemistry Lab Post-Lab Questions 1. If you were doing...
combinatorial chemistry; ester synthesis
Fundamentals of Organic Chemistry Lab Post-Lab Questions 1. If you were doing these experiments on a larger scale, describe two ways that you could improve the yield of the target ester What is the point of adding sulfuric acid to the reaction? How about the heat? 2. Pick your favorite of the esters you made, and write the mechanism for its formation. 3.
Fundamentals of Organic Chemistry Lab Can you use melting point as a method of analysis for your ester? Explain wh...
Fundamentals of Organic Chemistry Lab Can you use melting point as a method of analysis for your ester? Explain why. 3. 4. What is the proper way to smell the esters you synthesize? 5. If you heat the reaction mixture after adding water, what will happen? Combinatorial Chemistry: Ester Synthesis In today's lab, you will perform small scale Fischer esterifications to make a variety of esters. H2SO4 +R'OH Он OR R R Combinatorial chemistry is a term used to describe...
Organic chemistry -Carboxylic acid homework Question: In the general chemistry lab, students synthesize aspirin from salicylic...
Organic chemistry -Carboxylic acid homework
Question: In the general chemistry lab, students synthesize
aspirin from salicylic acid and acetic anhydride. In the lab,
students use sulfuric acid as a catalyst, but I want to consider an
alternate method for synthesizing aspirin using sodium acetate as a
catalyst:
a. Draw the structure of sodium acetate. Is sodium acetate a
stronger or weaker base than sodium hydroxide (NaOH). Explain. (1.5
pts)
b. Consider the structure of salicylic acid. It contains two
potentially...
CHEM 2032 ORGANIC CHEMISTRY LAB 1 SUMMER 2018 PRE/POST-TEST REAC 712 NAME 1. What safety Precautions...
CHEM 2032 ORGANIC CHEMISTRY LAB 1 SUMMER 2018 PRE/POST-TEST REAC 712 NAME 1. What safety Precautions must be taken when working with Sulfuric acid (H2S04) and Phosphoric acid (H3PO4)? 2. Briefly explain the following terms: a. Heterolytic bond cleavage b. Dehydration reaction Write the chemical equation for the dehydration of cyclohexanol, showing all reagents and conditions (use structural formula for all organic compounds). 3. Using the following information, calculate the theoretical yield for the dehydration of 3.0 mL of cyclohexanol...
Help with PreLab questions 1-4 Procedure Esterification Each group will be assigned an unknown alcohol by...
Help with PreLab questions 1-4
Procedure Esterification Each group will be assigned an unknown alcohol by the instructor. Record the unknown number and then add the contents of the vial (25 mmol of alcohol) to a 50 mL round bottom flask with a stir bar Then add 2.75 mL (approx. 50 mmol) of acetic acid followed by 0.25 mL of concentrated sulfuric acid Add a reflux condenser then reflux the mixture in a sand bath with stirring for one hour....
Please help with the question that I have circled in red. This is from a lab...
Please help with the question that I have circled in red. This
is from a lab I did and I have included the entire handout in case
it helps you to answer the question.
2015 Chem 263 2-Credit Org Lab 6T: Dehydration of Cyclohexanol to Cyclohexene Lab 6T w lecture you recently learned that alkenes undergo acid-catalyzed addition of H20 (hydration of the alkene) to yield alcohols. This lab with illustrate the same chemistry in reverse; the microscopic reverse of...
A group of students in an organic chemistry course performed a lab experiment in which they...
A group of students in an organic chemistry course performed a lab experiment in which they synthesized a colorful compound from not-especially-colorful starting materials. This synthesis required 3mol of the starting material, with formula C8H10NBr, for every mole of product desired; and the group started with 5.0g of starting material (all other reagents in excess). At the conclusion of their reaction, they had 8.0mL of solution, intensely colored due to the presence of their product. The concentration of colorful compounds...
TA Name: Student Name Fischer Esterification Post-Lab Questions: 3. Provide the appropriate starting materials and reagents needed to form the following compounds via a Fischer esterification: a. 3-ethyl-2-methylpentyl 3-methylhexanoate b. (2-methylcyclopentyl)methyl 2,4-dimethylpentanoate SSSSSSSSSSSSSSSSSSSSETITIITTITTIERRARI 4. Explain how concentrated sulfuric acid catalyzes the Fischer esterification reaction? Use reactive intermediate structures to explain your reasoning in detail: Page 109
combinatorial chemistry; ester synthesis
Fundamentals of Organic Chemistry Lab Post-Lab Questions 1. If you were doing these experiments on a larger scale, describe two ways that you could improve the yield of the target ester What is the point of adding sulfuric acid to the reaction? How about the heat? 2. Pick your favorite of the esters you made, and write the mechanism for its formation. 3.
Fundamentals of Organic Chemistry Lab Can you use melting point as a method of analysis for your ester? Explain why. 3. 4. What is the proper way to smell the esters you synthesize? 5. If you heat the reaction mixture after adding water, what will happen? Combinatorial Chemistry: Ester Synthesis In today's lab, you will perform small scale Fischer esterifications to make a variety of esters. H2SO4 +R'OH Он OR R R Combinatorial chemistry is a term used to describe...
Organic chemistry -Carboxylic acid homework
Question: In the general chemistry lab, students synthesize
aspirin from salicylic acid and acetic anhydride. In the lab,
students use sulfuric acid as a catalyst, but I want to consider an
alternate method for synthesizing aspirin using sodium acetate as a
catalyst:
a. Draw the structure of sodium acetate. Is sodium acetate a
stronger or weaker base than sodium hydroxide (NaOH). Explain. (1.5
pts)
b. Consider the structure of salicylic acid. It contains two
potentially...
CHEM 2032 ORGANIC CHEMISTRY LAB 1 SUMMER 2018 PRE/POST-TEST REAC 712 NAME 1. What safety Precautions must be taken when working with Sulfuric acid (H2S04) and Phosphoric acid (H3PO4)? 2. Briefly explain the following terms: a. Heterolytic bond cleavage b. Dehydration reaction Write the chemical equation for the dehydration of cyclohexanol, showing all reagents and conditions (use structural formula for all organic compounds). 3. Using the following information, calculate the theoretical yield for the dehydration of 3.0 mL of cyclohexanol...
Help with PreLab questions 1-4
Procedure Esterification Each group will be assigned an unknown alcohol by the instructor. Record the unknown number and then add the contents of the vial (25 mmol of alcohol) to a 50 mL round bottom flask with a stir bar Then add 2.75 mL (approx. 50 mmol) of acetic acid followed by 0.25 mL of concentrated sulfuric acid Add a reflux condenser then reflux the mixture in a sand bath with stirring for one hour....
Please help with the question that I have circled in red. This
is from a lab I did and I have included the entire handout in case
it helps you to answer the question.
2015 Chem 263 2-Credit Org Lab 6T: Dehydration of Cyclohexanol to Cyclohexene Lab 6T w lecture you recently learned that alkenes undergo acid-catalyzed addition of H20 (hydration of the alkene) to yield alcohols. This lab with illustrate the same chemistry in reverse; the microscopic reverse of...
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