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2. What is the purpose of adding phosphoric acid to 4-methylcyclohexanol? 3. What is the purpose...
5.0 ml of 2-methylcyclohexanol was placed in a 50 ml round bottom flask. Phosphoric acid (85%,...
5.0 ml of 2-methylcyclohexanol was placed in a 50 ml round bottom flask. Phosphoric acid (85%, 5 ml) was added cautiously, and the mixture swirled. Boiling stones were added to prevent bumping during heating. The mixture was heated to reflux temperature and refluxed for 15 minutes. The products were collected between 85-90 ˚C, in a small round bottom flask, cooled in ice water. Isolation Procedure The distillate was washed with 2 x 5 ml saturated sodium chloride solution in a...
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add...
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add 4.0 ml (d = 1.08 g/mL; 4.3 g) of acetic anhydride and 6-8 drops of 85% phosphoric acid. 3. Swirl the flask to mix all reagents, and place it in a 70°C water bath. Heat for about 10 minutes. 4. Remove the flask from the water bath and add 2 mL of cold water drop- wise, swirling the flask after each addition, 5. Add...
Explain what is the purpose of the following reagents/procedural steps in the synthesis of acetaminophen by...
Explain what is the purpose of the following reagents/procedural steps in the synthesis of acetaminophen by reacting p-aminophenol with acetic anhydride: a. Phosphoric acid b. Placing the reaction flask in warm water c. Purpose for placing crude product of acetaminophen in a 100 ml beaker with 20 ml of water, then heat it on a hot plate until crystals dissolves then let cool. Then having it in an ice bath for 20 min once crystals appeared. d. Drying product at...
Elimination Reactions 1) Where would the starting material, 2-methylcyclohexanol, come out on a gas chromatogram relative...
Elimination Reactions 1) Where would the starting material, 2-methylcyclohexanol, come out on a gas chromatogram relative to the alkene product(s) if they were run at the same time? Explain why. 2) What is the purpose of the sodium bicarbonate solution? Saarum bicarbOkare aaws Out/get Tid Of tHe cia trace 3) If you started with 4.5 mL of 2-methylcyclohexanol, what is the theoretical yield of CH2 in grams? Assume a 1:1 molar ratio of reactants: products. 4) Why is concentrated phosphoric...
Question 16 What is the purpose of adding phosphoric acid in aspirin synthesis A) enhance the...
Question 16 What is the purpose of adding phosphoric acid in aspirin synthesis A) enhance the nucleophilicity of the OH of salicylic acid B) enhance the electrophilicty of acetic anhydride enhance the nucleophilicity of acetic anhydride D) enhance the electrophilicty of the carbonyl of salicylic acid А 8 С Question 17 Which statement(s) is correct for electrophilic aromatic substitution (EAS)? (multiple answer) ferrocene is more reactive than benzene A. benzene is more reactive than ferrocene B C. ferrocene is more...
1) In the lab of synthesis of aspirin, how will adding HCl instead of phosphoric acid...
1) In the lab of synthesis of aspirin, how will adding HCl instead of phosphoric acid affect the outcome of the experiment. 2) In the lab of synthesis of aspirin, what is the purpose of using KMnO4 solution? 3) Suggest 2 other ways(besides use of hickman still) that you can use to influence the direction of reaction equilibrium in the lab dehydration of alcohol to alkenes 4) How will the absence of hickman still affect the outcome of the experiment...
UDHUI U Caus lu le IUITSLUIT UI UULIT Pruuucis. 3) Explain the purpose of the following...
UDHUI U Caus lu le IUITSLUIT UI UULIT Pruuucis. 3) Explain the purpose of the following in the above experiment: a. Sulfuric acid b. Simple distillation - in step 1 C. Sodium hydroxide extraction d. Anhydrous sodium sulfate e. Ice-cooled receiving/collecting flask 1. Covering the flask with a watch alass in step 10 Questions 1) Write the reactions that represent the addition of KMnO4 and Br2 to the two alkenes. 2) Draw the full mechanism (with arrow pushing) for the...
the experiment is the dehydratipn of 2-methylcyclohexanol 4. What purpose does KMnO4serve in this experiment? (1)...
the experiment is the dehydratipn of
2-methylcyclohexanol
4. What purpose does KMnO4serve in this experiment? (1) s the and ㄴhich is 5. Define the following terms (4) Mass Spectrometery: Base Peak: Molecular ion (M):
(1 pts) . PUSL HD Questions 8. TA signature POST LAB QUESTIONS: 1. What major alkene...
(1 pts) . PUSL HD Questions 8. TA signature POST LAB QUESTIONS: 1. What major alkene product is produced by dehydrating the following alcohols? a. Cyclohexanol b. 1-Methylcyclohexanol c. 4-Methylcyclohexanol d. 3,3-Dimethylcyclohexanol 2. What is the purpose of the calcium chloride in this experiment? 3. There are three possible isomers when dehydrating 2-methylcyclohexanol. Which do you expect to be the major product and can IR be used to determine which one you have? 4. In this experiment, 1.0 mL of...
Need help with number 2 and 3 on the postlab section. Elimination Reactions Background The purpose...
Need help with number 2 and 3 on the postlab section.
Elimination Reactions Background The purpose of this lab is to prepare an alkene by dehydration of an alcohol in the presence of an acid catalyst Elimination reactions often result in the formation of multiple products. In this lab, 2-methylcyclohexanol is dehydrated to form an alkene. The product will be analyzed by GC-MS to determine the ratio of alkene isomers formed. You will need to determine the mechanism of the...
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add 4.0 ml (d = 1.08 g/mL; 4.3 g) of acetic anhydride and 6-8 drops of 85% phosphoric acid. 3. Swirl the flask to mix all reagents, and place it in a 70°C water bath. Heat for about 10 minutes. 4. Remove the flask from the water bath and add 2 mL of cold water drop- wise, swirling the flask after each addition, 5. Add...
Elimination Reactions 1) Where would the starting material, 2-methylcyclohexanol, come out on a gas chromatogram relative to the alkene product(s) if they were run at the same time? Explain why. 2) What is the purpose of the sodium bicarbonate solution? Saarum bicarbOkare aaws Out/get Tid Of tHe cia trace 3) If you started with 4.5 mL of 2-methylcyclohexanol, what is the theoretical yield of CH2 in grams? Assume a 1:1 molar ratio of reactants: products. 4) Why is concentrated phosphoric...
Question 16 What is the purpose of adding phosphoric acid in aspirin synthesis A) enhance the nucleophilicity of the OH of salicylic acid B) enhance the electrophilicty of acetic anhydride enhance the nucleophilicity of acetic anhydride D) enhance the electrophilicty of the carbonyl of salicylic acid А 8 С Question 17 Which statement(s) is correct for electrophilic aromatic substitution (EAS)? (multiple answer) ferrocene is more reactive than benzene A. benzene is more reactive than ferrocene B C. ferrocene is more...
UDHUI U Caus lu le IUITSLUIT UI UULIT Pruuucis. 3) Explain the purpose of the following in the above experiment: a. Sulfuric acid b. Simple distillation - in step 1 C. Sodium hydroxide extraction d. Anhydrous sodium sulfate e. Ice-cooled receiving/collecting flask 1. Covering the flask with a watch alass in step 10 Questions 1) Write the reactions that represent the addition of KMnO4 and Br2 to the two alkenes. 2) Draw the full mechanism (with arrow pushing) for the...
the experiment is the dehydratipn of
2-methylcyclohexanol
4. What purpose does KMnO4serve in this experiment? (1) s the and ㄴhich is 5. Define the following terms (4) Mass Spectrometery: Base Peak: Molecular ion (M):
(1 pts) . PUSL HD Questions 8. TA signature POST LAB QUESTIONS: 1. What major alkene product is produced by dehydrating the following alcohols? a. Cyclohexanol b. 1-Methylcyclohexanol c. 4-Methylcyclohexanol d. 3,3-Dimethylcyclohexanol 2. What is the purpose of the calcium chloride in this experiment? 3. There are three possible isomers when dehydrating 2-methylcyclohexanol. Which do you expect to be the major product and can IR be used to determine which one you have? 4. In this experiment, 1.0 mL of...
Need help with number 2 and 3 on the postlab section.
Elimination Reactions Background The purpose of this lab is to prepare an alkene by dehydration of an alcohol in the presence of an acid catalyst Elimination reactions often result in the formation of multiple products. In this lab, 2-methylcyclohexanol is dehydrated to form an alkene. The product will be analyzed by GC-MS to determine the ratio of alkene isomers formed. You will need to determine the mechanism of the...
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