Homework Answers
The bulb of the thermometer should be positioned near the sidearm of the Y-adaptor. The aim is to measure the temperature of the vapous. So, dipping it in the liquid or lowering it close to the liquid will give a false higher reading. Similarly, placing it too high will result it in being away from vapours hence giving a false reading (lower than the true value) of the temperature.
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What is the correct position of the thermometer bulb in the simple distillation apparatus? Select one:...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that all joints are secure and that the apparatus is appropriately supported. Remember to allow for space below the distillation flask for the heating mantle and below the receiving flask for an ice bath. Pay extra attention to the positioning of the bulb of the thermometer as mentioned in the introduction. It is critical that the thermometer be positioned correctly for accurate temperature measurement. Using...
rewrite text in past tense Procedure-Simple Distillation 1. Take 60 ml of a 50:50 mixture of...
rewrite text in past tense Procedure-Simple Distillation 1. Take 60 ml of a 50:50 mixture of cyclohexane and toluene and place in a round bottom flask. Make sure you add a few boiling chips. 2. Assemble the distillation apparatus (See Figure 2.) and start the water flowing through the condenser. Place a graduated cylinder under the bent adapter so that you can measure the volume of distillate you collect. 3. Begin heating the sample with a heating mantle until it...
weight of cylinder 10.48g weight of cylinder with of isopentyl alcohol 14.55g weight of collecting flask...
weight of cylinder 10.48g
weight of cylinder with of isopentyl alcohol 14.55g
weight of collecting flask 56.77 g
weight of collecting flask with product 60.42g
I need help getting theoretical yield and % yield.
Experiment 12 Isopentyl Acetate (Banana Oil) 93 Rasmussen, P. W. Qualitative Analysis by Gas Chromatography-G.C. versus the Nose in Formu- lation of Artificial Fruit Flavors." Journal of Chemical Education, 61 (January 1984): 62. Shreve, R. N., and Brink, J. Chemical Process Industries, 4th ed. New York:...
What is the SN2 reaction? How does Br attach to which carbon as a nucleophile and...
What is the SN2 reaction? How does Br attach to which carbon as
a nucleophile and why? Difference between Unimolecular or
Bimolecular? How NaBr and H2SO4 work in the
reaction? Why Water/Sulfuric Acid/Brine/Sodium
Hydroxide/Na2SO4 in Extraction? What does
each layer have inside in each step of the separation?
Please help. Due to corona, this is a theoretical lab and I am
very confused.
Chapter 16. The Sy2 Reaction: 1-Bromobutane Handout by Dr. Zhiyong Wang CH3CH2CH2CH, OH NaBr, H2SO4 ©Dr. Wang...
What is the percent recovery of the product? (weight of product, acetaminophen=0.320g) EXPERIMENTAL PROCEDURE 1. Use...
What is the percent recovery of the product? (weight of
product, acetaminophen=0.320g)
EXPERIMENTAL PROCEDURE 1. Use a mortar and pestle to crush one tablet completely to powder. 2. Transfer the powder to a 5 ml. conical viale be sure to thoroughly scrape the residue from the mortar. 3. Add methanol to the 2 mL mark. 4. Cap the vial do not use an o-ring mix with an automatic mixer for 1 minute, and set aside to let the solids settle....
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
Procedure for Virtual Lab 3: Dehydration of an alcohol and GC analysisDehydration of 2-methylcyclohexanol 1. Observe...
Procedure for Virtual Lab 3: Dehydration of an alcohol and GC
analysisDehydration of 2-methylcyclohexanol
1. Observe the equipment and chemicals that will be used for the
reaction.2. The aluminum block is placed on thehot plate and 2-3
boiling chips are added to a conical vial. 3. The vial is placed
into one of the openings on the aluminum block. 4. 1mL of
2-methylcyclohexanol is added to the conical vial. 5. 2mL of 85%
phosphoric acid is added to the conical...
answer questions #1-7 and I'll send more information on question #7. We were unable to transcribe...
answer questions #1-7 and I'll send more information
on question #7.
We were unable to transcribe this imagesolution of a Mixture by Distillation 4 BACKGROUND s one of the most common methods of purifyinga ery simple method: a liquid is brought to a boil, the liquid becomes a gas the gas a liquid. It is a collected returns to the liquid state and the liquid acquire sufficient e from the liquid phase and enter into the s vapor phase Evaporation...
Given that the final mass of acetaminophen crystals= 0.320g, - What is the percent recovery or...
Given that the final mass of acetaminophen crystals=
0.320g,
- What is the percent recovery or your product?
- If this is above 100%, propose reasons for this. If not,
list possible sources for the loss lf product.
- What is the melting point (mp) of your product? The expected
mp is 170C. What can you say about the purity of your
product?
The
weight of the acetaminophen tablet is 500mg as stated in
step#15.
133 Experiment 11 Isolation of...
Give a detailed mechanism for this reaction and give a separation scheme NUCLEOPHILIC ACYL SUBSTITUTION: Synthesis...
Give a detailed mechanism for this reaction and give a separation
scheme
NUCLEOPHILIC ACYL SUBSTITUTION: Synthesis of an Ester Isoamyl acetate (Banana Oil) Purpose This experiment demonstrat and alcohol. The technique of refluxing the reaction mixture is introduced. es the procedure for the synthesis of an ester from a carboxylic acid Esters are an important functional group in organic chemistry, and esters are found widely distributed in nature. Many lower molecular weight esters are associated with natural fuit flavors and...
weight of cylinder 10.48g
weight of cylinder with of isopentyl alcohol 14.55g
weight of collecting flask 56.77 g
weight of collecting flask with product 60.42g
I need help getting theoretical yield and % yield.
Experiment 12 Isopentyl Acetate (Banana Oil) 93 Rasmussen, P. W. Qualitative Analysis by Gas Chromatography-G.C. versus the Nose in Formu- lation of Artificial Fruit Flavors." Journal of Chemical Education, 61 (January 1984): 62. Shreve, R. N., and Brink, J. Chemical Process Industries, 4th ed. New York:...
What is the SN2 reaction? How does Br attach to which carbon as
a nucleophile and why? Difference between Unimolecular or
Bimolecular? How NaBr and H2SO4 work in the
reaction? Why Water/Sulfuric Acid/Brine/Sodium
Hydroxide/Na2SO4 in Extraction? What does
each layer have inside in each step of the separation?
Please help. Due to corona, this is a theoretical lab and I am
very confused.
Chapter 16. The Sy2 Reaction: 1-Bromobutane Handout by Dr. Zhiyong Wang CH3CH2CH2CH, OH NaBr, H2SO4 ©Dr. Wang...
What is the percent recovery of the product? (weight of
product, acetaminophen=0.320g)
EXPERIMENTAL PROCEDURE 1. Use a mortar and pestle to crush one tablet completely to powder. 2. Transfer the powder to a 5 ml. conical viale be sure to thoroughly scrape the residue from the mortar. 3. Add methanol to the 2 mL mark. 4. Cap the vial do not use an o-ring mix with an automatic mixer for 1 minute, and set aside to let the solids settle....
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
Procedure for Virtual Lab 3: Dehydration of an alcohol and GC
analysisDehydration of 2-methylcyclohexanol
1. Observe the equipment and chemicals that will be used for the
reaction.2. The aluminum block is placed on thehot plate and 2-3
boiling chips are added to a conical vial. 3. The vial is placed
into one of the openings on the aluminum block. 4. 1mL of
2-methylcyclohexanol is added to the conical vial. 5. 2mL of 85%
phosphoric acid is added to the conical...
answer questions #1-7 and I'll send more information
on question #7.
We were unable to transcribe this imagesolution of a Mixture by Distillation 4 BACKGROUND s one of the most common methods of purifyinga ery simple method: a liquid is brought to a boil, the liquid becomes a gas the gas a liquid. It is a collected returns to the liquid state and the liquid acquire sufficient e from the liquid phase and enter into the s vapor phase Evaporation...
Given that the final mass of acetaminophen crystals=
0.320g,
- What is the percent recovery or your product?
- If this is above 100%, propose reasons for this. If not,
list possible sources for the loss lf product.
- What is the melting point (mp) of your product? The expected
mp is 170C. What can you say about the purity of your
product?
The
weight of the acetaminophen tablet is 500mg as stated in
step#15.
133 Experiment 11 Isolation of...
Give a detailed mechanism for this reaction and give a separation
scheme
NUCLEOPHILIC ACYL SUBSTITUTION: Synthesis of an Ester Isoamyl acetate (Banana Oil) Purpose This experiment demonstrat and alcohol. The technique of refluxing the reaction mixture is introduced. es the procedure for the synthesis of an ester from a carboxylic acid Esters are an important functional group in organic chemistry, and esters are found widely distributed in nature. Many lower molecular weight esters are associated with natural fuit flavors and...
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