Add 2 mL of water. Heat the solution briefly to boiling. The solution should be clear and colorless. Transfer the clear, warm solution to a centrifuge tube using a filter pipet and allow to cool to room temperature. Add 4 mL of methylene chloride. Swirl and shake to mix the layers. Transfer the lower (organic) layer to an Erlenmeyer flask. Add anhydrous Na2SO, until no more clumping of the solid is observed. After letting stand for 10 min- utes, transfer the solution using a Pasteur filter pipet to a clean, tared Erlenmeyer flask containing a boiling chip. Evaporate the solvent in the hood leaving an oily residue. Weigh the product. Record the IR spectrum and the NMR spectrum and deduce the structure of the product(s). If more than one product is formed, use NMR spectroscopy or GC to determine the product composition.
Homework Answers
Add Answer to:
Refer to the assigned procedure and verify that an excess of NaBH4 is to be used for these reacti...
NaBH4(Sodium Borohydride) Reduction of Ketone (Organic Chemistry Lab) Questions 1. Explain the...
NaBH4(Sodium Borohydride) Reduction of Ketone (Organic
Chemistry Lab)
Questions
1.
Explain the reaction mechanism and why each reagent was used.
2. Explain the need for 2 different drying agents
3. Use
IR stretches and melting point determination to explain your
results.
4.
Report sources of error.
Experiment Procedure
Assemble the reaction apparatus as shown in Figure 14.2a,
consisting of a 3.0 mL conical vial charged with 4-t-
butylcyclohexanone (amount calculated in pre-lab) and methanol (100
μL). Attach the air condenser...
If each bag of Lipton black tea contains 55 mg of caffeine, what is the maximum...
If each bag of Lipton black tea contains 55 mg of caffeine, what is the maximum amount of caffeine that you could extract from one using our procedure? Assume one bag and 40mL of tea-water at the end of initial solid-liquid extraction. The partition coefficient (K) for caffeine in methylene chloride is 7.2. How much caffeine could be extracted using our procedure if we had used ethyl acetate (K = 2.0) instead of methylene chloride? Explain why the amount does...
Part A 1. If you had used more methylene chloride in each step, you could have...
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...
i need help with #3 please! SAFETY NOTES: Bromobenene and acetophenone are irritants. Wear gloves and...
i need help with #3 please!
SAFETY NOTES: Bromobenene and acetophenone are irritants. Wear gloves and avoid contact with skin, eyes, and clothing • MHC) is dritating to the skin avoid contact with the skin, eyes, and clothing Diethyl ether, usually referred to simply as "ether", is volatile and flammable. Keep a safe distance from hot electrical devices WASTE DISPOSAL *** A itrate is the liquid that passed through the Hirsch funnel, ending up in the bottom of the sidearm...
Determine the yield of the products. The first should be the yield of benzoic acid. The...
Determine the yield of the products.
The first should be the yield of benzoic acid.
The ammon plus is should be the yield of benzamide. Please
write out and show all work, theoretical yield etc. Thanks!
Purification-Week add Decant the dry dichloromethane solution into a 25-mlL round-bottom flask, and a few boiling chips. Don't worry if a little magnesium sulfate slips into the distilla- tion flask, it will act as additional boiling chips. Set up an apparatus for microscale simple...
SYNTHESIS OF T-PENTYL CHLORIDE LAB Provide a stoichiometry table for the reaction being performed in this...
SYNTHESIS OF T-PENTYL CHLORIDE LAB
Provide a stoichiometry table for the reaction being performed
in this lab.
PROCEDURE Preparation oft-Pentyl Chloride In a 125-mL separatory funnel, place 10.0 mL of tert-pentyl alcohol (2-methyl-2- butanol, MW = 88.2, d = 0.805 g/mL) and 25 mL of concentrated hydrochloric acid (d 1.18 g/mL). Do not stopper the funnel. Gently swirl the mixture in the separa- tory funnel for about 1 minute. After this period of swirling, stopper the separatory funnel and carefully...
Calculate the quantity (mmol) of reagents to be used in the assigned experiment. Which reagent is...
Calculate the quantity (mmol) of reagents to be used in the
assigned experiment. Which reagent is the limiting reagent? Show by
calculations.
8. n the reaction of vanillin with silver oxide, what gets oxidized and what gets reduced? Part B: Miniscale Hydrolysis of Methyl Salicylate To a 25-mL round-bottom flask containing a spin bar, add 7.5 mL of 5 M NaOH and 1.0mL. of methyl salicylate. Swirl to mix. A white solid will form, which will eventually disap- pear as...
In this Diels-Alder reaction, what is the limiting reagent for this reaction? Please show work In...
In this Diels-Alder reaction, what is the limiting reagent for
this reaction? Please show work
In this experiment, a Diels-Alder reaction will be performed to generate 4-cyclohexene- 1,2-dicarboxylic anhydride. The reaction occurs when 1,3-butadiene is combined with maleic anhydride and heated as shown below. Once the product has been isolated, the IR spectrum, melting point, and experimental yield can be determined. 5.- I111NI O Due to the inherent difficulties with the handling of gaseous 1,3-butadiene, it will be generated in...
You don’t have to tell me purpose. just where in procedure for each technique. Section/Instructor SN2...
You
don’t have to tell me purpose. just where in procedure for each
technique.
Section/Instructor SN2 Pre-lab (20 points) Answer on a separate piece of paper 1. (6 pts.) What is the purpose of the following experimental techniques and where in the procedure is each used? a. Heating under reflux b. Simple distillation c. Water wash d. Addition of COLD NAOH e. Saturated NaCl solution f. Addition of anhydrous sodium sulfate SN2 Reaction Procedure Set-Up: 100 mL RBF: 11.1 g...
Find %yield please the product obtained was 0.0870g In the hood, place 100 mu L of...
Find %yield please the product obtained was 0.0870g
In the hood, place 100 mu L of aniline in a tared 10 times 75 mm (small) test tube. Place the test cube in a small beaker or Erlenmeyer flask to avoid spillage. Stopper the cube with a cork. Now, using a Pasteur pipet, add (with swirling) 0.5 mL of water, followed by three drops of concentrated HCI. Add 10 mg of decolorizing charcoal (we use the pelletized form, called Nonrit^TM) to...
NaBH4(Sodium Borohydride) Reduction of Ketone (Organic
Chemistry Lab)
Questions
1.
Explain the reaction mechanism and why each reagent was used.
2. Explain the need for 2 different drying agents
3. Use
IR stretches and melting point determination to explain your
results.
4.
Report sources of error.
Experiment Procedure
Assemble the reaction apparatus as shown in Figure 14.2a,
consisting of a 3.0 mL conical vial charged with 4-t-
butylcyclohexanone (amount calculated in pre-lab) and methanol (100
μL). Attach the air condenser...
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...
i need help with #3 please!
SAFETY NOTES: Bromobenene and acetophenone are irritants. Wear gloves and avoid contact with skin, eyes, and clothing • MHC) is dritating to the skin avoid contact with the skin, eyes, and clothing Diethyl ether, usually referred to simply as "ether", is volatile and flammable. Keep a safe distance from hot electrical devices WASTE DISPOSAL *** A itrate is the liquid that passed through the Hirsch funnel, ending up in the bottom of the sidearm...
Determine the yield of the products.
The first should be the yield of benzoic acid.
The ammon plus is should be the yield of benzamide. Please
write out and show all work, theoretical yield etc. Thanks!
Purification-Week add Decant the dry dichloromethane solution into a 25-mlL round-bottom flask, and a few boiling chips. Don't worry if a little magnesium sulfate slips into the distilla- tion flask, it will act as additional boiling chips. Set up an apparatus for microscale simple...
SYNTHESIS OF T-PENTYL CHLORIDE LAB
Provide a stoichiometry table for the reaction being performed
in this lab.
PROCEDURE Preparation oft-Pentyl Chloride In a 125-mL separatory funnel, place 10.0 mL of tert-pentyl alcohol (2-methyl-2- butanol, MW = 88.2, d = 0.805 g/mL) and 25 mL of concentrated hydrochloric acid (d 1.18 g/mL). Do not stopper the funnel. Gently swirl the mixture in the separa- tory funnel for about 1 minute. After this period of swirling, stopper the separatory funnel and carefully...
Calculate the quantity (mmol) of reagents to be used in the
assigned experiment. Which reagent is the limiting reagent? Show by
calculations.
8. n the reaction of vanillin with silver oxide, what gets oxidized and what gets reduced? Part B: Miniscale Hydrolysis of Methyl Salicylate To a 25-mL round-bottom flask containing a spin bar, add 7.5 mL of 5 M NaOH and 1.0mL. of methyl salicylate. Swirl to mix. A white solid will form, which will eventually disap- pear as...
In this Diels-Alder reaction, what is the limiting reagent for
this reaction? Please show work
In this experiment, a Diels-Alder reaction will be performed to generate 4-cyclohexene- 1,2-dicarboxylic anhydride. The reaction occurs when 1,3-butadiene is combined with maleic anhydride and heated as shown below. Once the product has been isolated, the IR spectrum, melting point, and experimental yield can be determined. 5.- I111NI O Due to the inherent difficulties with the handling of gaseous 1,3-butadiene, it will be generated in...
You
don’t have to tell me purpose. just where in procedure for each
technique.
Section/Instructor SN2 Pre-lab (20 points) Answer on a separate piece of paper 1. (6 pts.) What is the purpose of the following experimental techniques and where in the procedure is each used? a. Heating under reflux b. Simple distillation c. Water wash d. Addition of COLD NAOH e. Saturated NaCl solution f. Addition of anhydrous sodium sulfate SN2 Reaction Procedure Set-Up: 100 mL RBF: 11.1 g...
Find %yield please the product obtained was 0.0870g
In the hood, place 100 mu L of aniline in a tared 10 times 75 mm (small) test tube. Place the test cube in a small beaker or Erlenmeyer flask to avoid spillage. Stopper the cube with a cork. Now, using a Pasteur pipet, add (with swirling) 0.5 mL of water, followed by three drops of concentrated HCI. Add 10 mg of decolorizing charcoal (we use the pelletized form, called Nonrit^TM) to...
Most questions answered within 3 hours.
-
All cells have a membrane potential but only excitable cells
like neurons or muscle cells can...
asked 8 minutes ago -
Suppose a quiz contains 20 true/false questions. You
know the correct answer to the first 10...
asked 36 minutes ago -
Is depression the cause or the effect of a stressful
situation? Explain.
12) How do learning...
asked 1 hour ago -
Critically discuss whether the Bretton Woods System has been
based on Keynesian principles. Please give me...
asked 2 hours ago -
An ammeter with a scale ranging from 0 to 15mA has a resistance
of 5Omega. How...
asked 3 hours ago -
def blur(img: Image) -> Image:
"""Blur Image, img, based on the given pixel_size
Hints:
- For...
asked 3 hours ago -
a
carboxylic acid reacting with a strong base will form what
ion
asked 4 hours ago -
which value if any in each pair corresponds to a
faster reaction k=18.k=137
asked 4 hours ago -
Bus lines can be separated into two generic types, dedicated and
multiplexed.
i. What is the...
asked 6 hours ago -
This is 'Branding' course which is part of marketing.
1. As a brand manager of Nudie...
asked 6 hours ago -
You are considering the purchase of a new stock. The stock is
forecasted to pay a...
asked 7 hours ago -
vector a has componets Ax and Ay, and makes an angle theta with
the y-axis. Select...
asked 7 hours ago