Calculate the % Yield or Recovery: 6 tablets (325 mg aspirin each) are crushed and put...
Calculate the % Yield or Recovery:
-
6 tablets (325 mg aspirin each) are crushed and put through recrystallization to remove the starch impurities. The product is weighed to be 1.235 g.
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6mL of the alcohol from the first reaction (D=1.236g/mL) were used for a dehydration reaction. The product weighed 2.345 g. (Molar Mass of alcohol 128g/mol, alkene 110 g/mol)
Homework Answers
According to Chegg guidelines if more than one question is asked then we have to answer 1st question only
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Calculate the % Yield or Recovery:
6 tablets (325 mg aspirin each) are crushed and put...
Exercise 7: The % Yield of Aspirin Name Date Read Exercise 7 in your lab manual....
Exercise 7: The % Yield of Aspirin Name Date Read Exercise 7 in your lab manual. Complete the Pre-lab Assignment. In this substitute lab exercise, you will watch a short video on preparing aspirin. The video is posted on the course Moodle page, and it provides the masses of the reactants and the product; you should be able to calculate the theoretical yield and the % yield from the data given by the video. Submit the completed assignment by March...
PREPARATION OF PHARMACEUTICALS - Fischer Esterification Reactions Q: Calculate the expected mass of both methyl salicylate and aspirin assuming 100% yield. EXPERIMENT7 PREPARATION OF PHARMACEUTICALS...
PREPARATION OF PHARMACEUTICALS - Fischer Esterification
Reactions
Q: Calculate the expected mass of both methyl salicylate and
aspirin assuming 100% yield.
EXPERIMENT7 PREPARATION OF PHARMACEUTICALS Fischer Esterification Reactions Almost 2500 years ago, physicians such as Hippocrates recommended that patients chew on the bark of the willow to alleviate pain. The active ingredient in willow bark was found to be salicin, a compound made of a molecule of salicyl alcohol bonded to a p-D-glucose molecule. In the stomach, the bond between...
i need to calculate the theortetical yield by finding the limiting reactant of the experiment by...
i need to calculate the theortetical yield by finding the
limiting reactant of the experiment by converting reactants to
product, then calculate the percent yield using the limiting
reactant
-in my experiment the amout of crystals i obtained was 1.232 g
(watch glass + filter paper = 31.228 g and watch glass, filter
paper, + crystals = 32.460 g)
REACTION SCHEME H сно, ОН- ОСH, CH panisaldehyde acetophenone Molar Mass: 120.15g/mol Molar Mass: 136.15g/mol Molar Mass: 239.30g/mol Density: 1.119g/mL Density:...
Procedure Reaction: Add about 15 mL (measured precisely) of t-amyl alcohol to a 50 mL round...
Procedure Reaction: Add about 15 mL (measured precisely) of t-amyl alcohol to a 50 mL round bottom flask (the flask will become your stillpot). Cool the pot in an ice-water bath and slowly add, with swirling, about 5 mL of 9 M sulfuric acid. Add two boiling chips then clamp the flask to your ring stand. Do not leave the flask someplace it can be knocked over. Set up a fractional distillation with a foil wrapped Vigreux column. Use a...
Procedure Reaction: Add about 15 mL (measured precisely) of t-amyl alcohol to a 50 mL round...
Procedure Reaction: Add about 15 mL (measured precisely) of t-amyl alcohol to a 50 mL round bottom flask (the flask will become your stillpot). Cool the pot in an ice-water bath and slowly add, with swirling, about 5 mL of 9 M sulfuric acid. Add two boiling chips then clamp the flask to your ring stand. Do not leave the flask someplace it can be knocked over. Set up a fractional distillation with a foil wrapped Vigreux column. Use a...
Pre-lab Questions: Importance A one-step preparation of aspirin from its precursor, salicylic acid, via an ester...
Pre-lab Questions:
Importance A one-step preparation of aspirin from its precursor, salicylic acid, via an ester formation illustrates one of synthetic organic chemistry's most important uses, making the drugs that treat all types of illnesses. OH HOOH Background Aspirin is a prodrug of salicylic acid, the actual active drug. A compound related to salicylic acid, salicin, was first isolated from willow bark in the mid 1700's, but willow-bark extract was used by the ancient Greeks as a treatment for pain...
calculate the % yield fir the n-butylacetate synthesis. show how you obtained expected yield. Mass of...
calculate the % yield fir the n-butylacetate synthesis. show how
you obtained expected yield.
Mass of final product was 3.4g
INSTRUCTIONS A. SETTING UP THE EXPERIMENT This wetion was completed during Experiment D. Proceed to Part B. anol) and 0.75 mL concentrated H2SO4 1. GOGGLES AND GLOVES. Carefully pour the following materials into a flask: 5 ml glacial acetic acid, 4.5 mLn-butanol (1-butanol) and 0.75 ml 2. Swirl carefully to mix the components thoroughly. 3. Seal the flask well (cork...
how do i calculate the number of moles, theoretical yield, and limiting reagent on the READ...
how do i calculate the number of moles, theoretical yield, and
limiting reagent on the READ ABOUT part? thank you
i need help on READ ABOUT: Calculate the number of moles of
2-methyl-2-butanol and hydrochloric acid (concentrated HCl is 12
M). Based on the balanced equation, determine the limiting reagent
and the theoretical yield of 2-chloride-2-methylbutane.
PREPARATION AND ANALYSIS OF T-AMYL CHLORIDE ОН HCI (conc.) + H2O DISCUSSION: Compounds with good leaving groups often participate in substitution reactions. Two limiting...
Explain why dimethyl maleate is converted in high yield to dimethyl fumarate under the conditions you...
Explain why dimethyl maleate is converted in high yield to
dimethyl fumarate under the conditions you used. Use thermodynamic
and kinetic arguments to justify your answer.
How does the reaction preformed relate to the isomerization of
retinal in the human eye (which enables vision).
Primer: A major topic covered in the second half of Organic I is the properties and reactivity of alkenes. This lab experiment will provide you with an opportunity to examine alkene reactivity by conducting an isomerization...
Process A. Preparation of 4-t-butylcyclohexene Assembling the equipment Fill the almost complete sand bath, place it...
Process A. Preparation of 4-t-butylcyclohexene Assembling the equipment Fill the almost complete sand bath, place it on the base of the shelf, fix the thermometer with a clip and start heating until the temperature of the sand is - 110C. B. Mixing the reagents Using the plastic funnel, introduce 0.60-0.70 g of 4-t-butylcyclohexanol into a large, clean, dry test tube. Then add 10 drops of concentrated phosphoric acid, 3 drops of concentrated sulfuric acid and a pebble to moderate boiling....
Exercise 7: The % Yield of Aspirin Name Date Read Exercise 7 in your lab manual. Complete the Pre-lab Assignment. In this substitute lab exercise, you will watch a short video on preparing aspirin. The video is posted on the course Moodle page, and it provides the masses of the reactants and the product; you should be able to calculate the theoretical yield and the % yield from the data given by the video. Submit the completed assignment by March...
PREPARATION OF PHARMACEUTICALS - Fischer Esterification
Reactions
Q: Calculate the expected mass of both methyl salicylate and
aspirin assuming 100% yield.
EXPERIMENT7 PREPARATION OF PHARMACEUTICALS Fischer Esterification Reactions Almost 2500 years ago, physicians such as Hippocrates recommended that patients chew on the bark of the willow to alleviate pain. The active ingredient in willow bark was found to be salicin, a compound made of a molecule of salicyl alcohol bonded to a p-D-glucose molecule. In the stomach, the bond between...
i need to calculate the theortetical yield by finding the
limiting reactant of the experiment by converting reactants to
product, then calculate the percent yield using the limiting
reactant
-in my experiment the amout of crystals i obtained was 1.232 g
(watch glass + filter paper = 31.228 g and watch glass, filter
paper, + crystals = 32.460 g)
REACTION SCHEME H сно, ОН- ОСH, CH panisaldehyde acetophenone Molar Mass: 120.15g/mol Molar Mass: 136.15g/mol Molar Mass: 239.30g/mol Density: 1.119g/mL Density:...
Pre-lab Questions:
Importance A one-step preparation of aspirin from its precursor, salicylic acid, via an ester formation illustrates one of synthetic organic chemistry's most important uses, making the drugs that treat all types of illnesses. OH HOOH Background Aspirin is a prodrug of salicylic acid, the actual active drug. A compound related to salicylic acid, salicin, was first isolated from willow bark in the mid 1700's, but willow-bark extract was used by the ancient Greeks as a treatment for pain...
calculate the % yield fir the n-butylacetate synthesis. show how
you obtained expected yield.
Mass of final product was 3.4g
INSTRUCTIONS A. SETTING UP THE EXPERIMENT This wetion was completed during Experiment D. Proceed to Part B. anol) and 0.75 mL concentrated H2SO4 1. GOGGLES AND GLOVES. Carefully pour the following materials into a flask: 5 ml glacial acetic acid, 4.5 mLn-butanol (1-butanol) and 0.75 ml 2. Swirl carefully to mix the components thoroughly. 3. Seal the flask well (cork...
how do i calculate the number of moles, theoretical yield, and
limiting reagent on the READ ABOUT part? thank you
i need help on READ ABOUT: Calculate the number of moles of
2-methyl-2-butanol and hydrochloric acid (concentrated HCl is 12
M). Based on the balanced equation, determine the limiting reagent
and the theoretical yield of 2-chloride-2-methylbutane.
PREPARATION AND ANALYSIS OF T-AMYL CHLORIDE ОН HCI (conc.) + H2O DISCUSSION: Compounds with good leaving groups often participate in substitution reactions. Two limiting...
Explain why dimethyl maleate is converted in high yield to
dimethyl fumarate under the conditions you used. Use thermodynamic
and kinetic arguments to justify your answer.
How does the reaction preformed relate to the isomerization of
retinal in the human eye (which enables vision).
Primer: A major topic covered in the second half of Organic I is the properties and reactivity of alkenes. This lab experiment will provide you with an opportunity to examine alkene reactivity by conducting an isomerization...
Process A. Preparation of 4-t-butylcyclohexene Assembling the equipment Fill the almost complete sand bath, place it on the base of the shelf, fix the thermometer with a clip and start heating until the temperature of the sand is - 110C. B. Mixing the reagents Using the plastic funnel, introduce 0.60-0.70 g of 4-t-butylcyclohexanol into a large, clean, dry test tube. Then add 10 drops of concentrated phosphoric acid, 3 drops of concentrated sulfuric acid and a pebble to moderate boiling....
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