Answer for question 10?Homework Answers
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Answer for question 10?
You obtain 1.8 g of an impure solid. You know that the...
This is a post-lab question of the Recrystallization of Aspirin experiment. This is related to organic...
This is a post-lab question of the Recrystallization of Aspirin experiment. This is related to organic chemistry. Please be detailed, thank you! Given the table for solubility of compounds X and Y in solvent Z. If 2.00 grams of impure compound X (contaminated by 12.0% Y by weight) is recrystallized from 25.0mL of solvent Z, what will be the purity of recrystallized X? Solubility per 100 g of Solvent Z Compound 20℃ 80℃ X 1.0 g 8.0 g Y 0.70...
please answer all 5. Suppose you started with 10 g of impure compound A which was...
please answer all
5. Suppose you started with 10 g of impure compound A which was 80% pure, and after recrystallization you recovered 5 g of pure A. Calculate percent recovery. (5 points) 6. Should recrystallization increase or decrease the melting point range of the product you purified in class? Why? (5 points)
please answer all parts I am trying to check my answers. Recrystallization of Acetanilide Recrystallization is...
please answer all parts I am trying to check my
answers.
Recrystallization of Acetanilide Recrystallization is an important method used by chemists to purify solid compounds. When a chemist conducts a chemical reaction as shown in Scheme 1, it will rarely go to 100% completion, and will frequently produce byproducts. These byproducts and some of the unreacted starting materials will be present in the end as impurities. Chemists need ways to remove these unwanted impurities so they can isolate their...
Please right an in depth discussion about part C. We we’re not able to get any...
Please right an
in depth discussion about part C. We we’re not able to get any
recrystallization from our unknown. Talk about possible failures
that could of happen that prevented us to not get any or our
unknown to recrystallize. Thanks so much!
Experiment 1: Solids: Recrystallization and Melting Point Learning Outcomes: Upon completion of this lab, students will be able to perform the technique of recrystallization of an impure solid as well as be able to determine an appropriate...
1. Compound X has a solubility in toluene of 18 mg per 100 mL at 20...
1. Compound X has a solubility in toluene of 18 mg per 100 mL at 20 °C, and a solubility of 0.64 g per 100 mL at 70 °C. You are given a sample of 0.48 g of compound X which is contaminated with 25 mg of compound Y. A. If compound Y is always soluble in toluene, describe in detail how you could separate Y from X. Would x now be pure? B. If compound Y has approximately the same values of...
please provide clear answers. Thank you! 1. (8 pts) A crude reaction product (50 mg) is...
please provide clear answers.
Thank you!
1. (8 pts) A crude reaction product (50 mg) is to be purified by recrystallization from a single solvent. a) (5 pts) The crude solubility in ethanol at boiling temperature (BT) is 50 mg/mL and at O'C is 5 mg/mL. Read the statements and fill in True or False Describe in a few words the reason. True False Describe reason for true or false Statement The crude was dissolved in 5 mL of hot...
The student loads the solid onto a column, prepacked with silica gel, and elutes the column...
The student loads the solid onto a column, prepacked with silica gel, and elutes the column with an appropriate solvent system to allow the components to be completed separated. 11. Based on your understanding of column chromatography, which of the following solvent systems is most likely to yield the best separation of the two components in this mixture? Please explain your answer BRIEFLY (5 pts)! The ranking of solvent polarity is: MeOH>ethyl acetate> hexane (ie, MeOH is the most polar)....
Please solve Question 4, If you have time, please solve Question 3 as well. Have a...
Please solve Question 4, If you have time, please solve Question
3 as well.
Have a nice day:)
Question 3 1 pts What is the minimum volume of benzonitrile (in mL) required to recrystallize a 19.4 g sample of B? Solubility data for Compound B 15.5 g/100 mL of benzonitrile at 191 °C 2.3 g /100 mL of benzonitrile at -5 °C Please carry maximum number of significant figures through to final answer then round to a w olen m...
Aldehyde: ZPA Ketone: BCK Amount of material started with: 2 mL of aldehyde and 0.5 mL...
Aldehyde: ZPA
Ketone: BCK
Amount of material started with: 2 mL of aldehyde and 0.5 mL
of Ketone
Recrystallized Mass: 1.53 g
Melting Range: 196-200 C
Recrystallization Solvent: 9:1 Ethanol/Acetone
Aldehydes ketones Cyclopentanone Cyclohexanone Acetone Benzaldehyde p-tolualdehyde p-anisaldehyde Cinnamaldehyde 113 °C 175 °C 129-130 C 144 °C 189 °C 235-236 °C 212 °C 225 °C 118°C 170 °C 159 °C 180°C 4-methyl cyclohexanone 98-99 °C 113-113.5 °C 141-142 °C 163-164 °C 6.1724 7.6069 7.5891 Z-8, CDC13 Z-B, CDC13 7.2839 2724...
You will apply what you have learned earlier in the semester when performing the Acid-Base Extraction...
You will apply what you have learned earlier in the semester when performing the Acid-Base Extraction experiment to perform a different separation: that of an organic neutral compound and organic base. You will also need to purify and characterize these compounds. You will have one lab period to execute your plan for separating the assigned mixture given below. There will be a 1:1 (by mass) mixture placed in the lab: 1,4-dichlorobenzene/ethyl 4-aminobenzoate. You will take approximately 1 g of your...
please answer all
5. Suppose you started with 10 g of impure compound A which was 80% pure, and after recrystallization you recovered 5 g of pure A. Calculate percent recovery. (5 points) 6. Should recrystallization increase or decrease the melting point range of the product you purified in class? Why? (5 points)
please answer all parts I am trying to check my
answers.
Recrystallization of Acetanilide Recrystallization is an important method used by chemists to purify solid compounds. When a chemist conducts a chemical reaction as shown in Scheme 1, it will rarely go to 100% completion, and will frequently produce byproducts. These byproducts and some of the unreacted starting materials will be present in the end as impurities. Chemists need ways to remove these unwanted impurities so they can isolate their...
Please right an
in depth discussion about part C. We we’re not able to get any
recrystallization from our unknown. Talk about possible failures
that could of happen that prevented us to not get any or our
unknown to recrystallize. Thanks so much!
Experiment 1: Solids: Recrystallization and Melting Point Learning Outcomes: Upon completion of this lab, students will be able to perform the technique of recrystallization of an impure solid as well as be able to determine an appropriate...
please provide clear answers.
Thank you!
1. (8 pts) A crude reaction product (50 mg) is to be purified by recrystallization from a single solvent. a) (5 pts) The crude solubility in ethanol at boiling temperature (BT) is 50 mg/mL and at O'C is 5 mg/mL. Read the statements and fill in True or False Describe in a few words the reason. True False Describe reason for true or false Statement The crude was dissolved in 5 mL of hot...
The student loads the solid onto a column, prepacked with silica gel, and elutes the column with an appropriate solvent system to allow the components to be completed separated. 11. Based on your understanding of column chromatography, which of the following solvent systems is most likely to yield the best separation of the two components in this mixture? Please explain your answer BRIEFLY (5 pts)! The ranking of solvent polarity is: MeOH>ethyl acetate> hexane (ie, MeOH is the most polar)....
Please solve Question 4, If you have time, please solve Question
3 as well.
Have a nice day:)
Question 3 1 pts What is the minimum volume of benzonitrile (in mL) required to recrystallize a 19.4 g sample of B? Solubility data for Compound B 15.5 g/100 mL of benzonitrile at 191 °C 2.3 g /100 mL of benzonitrile at -5 °C Please carry maximum number of significant figures through to final answer then round to a w olen m...
Aldehyde: ZPA
Ketone: BCK
Amount of material started with: 2 mL of aldehyde and 0.5 mL
of Ketone
Recrystallized Mass: 1.53 g
Melting Range: 196-200 C
Recrystallization Solvent: 9:1 Ethanol/Acetone
Aldehydes ketones Cyclopentanone Cyclohexanone Acetone Benzaldehyde p-tolualdehyde p-anisaldehyde Cinnamaldehyde 113 °C 175 °C 129-130 C 144 °C 189 °C 235-236 °C 212 °C 225 °C 118°C 170 °C 159 °C 180°C 4-methyl cyclohexanone 98-99 °C 113-113.5 °C 141-142 °C 163-164 °C 6.1724 7.6069 7.5891 Z-8, CDC13 Z-B, CDC13 7.2839 2724...
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