Homework Answers
The crystal of acetaminophen were washed with minimum amount of cold water to decrease the loss of compound.
The minimum amount of a boiling solvent is used when recrystallizing the crystal of acetaminophen to make it saturated solution.
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Why should you use a minimum amount of a very cold solvent when washing the crystals...
During recrystalization, why should a minimum amount of hot solvent be used for dissolving a crude...
During recrystalization, why should a minimum amount of hot solvent be used for dissolving a crude acetanilide solid? Why must the recrystallized solid be washed with cold solvent?
a) Why do you use a minimum of hot water solvent in carrying out a recrystallization...
a) Why do you use a minimum of hot water solvent in carrying out a recrystallization of a particular compound? b) Why is it desirable to use suction filtration rather than gravimetric filtration in recovering the purified crystals? c) Why should the suction be released before the solid is washed with fresh solvent?
Person added hot solvent to a mix and no crystals formed so he placed mixture in...
Person added hot solvent to a mix and no crystals formed so he placed mixture in cold solvent, instantly, the crystals started to form But after placing the crystals into the vacuum, there was only a small amount of crystals there. So explain why he only got a small amount of crystals?
4. While filtering your product on the Buchner funnel, you washed the crystals with 15 mL of cold...
4. While filtering your product on the Buchner funnel, you washed the crystals with 15 mL of cold water. What is the purpose of washing the crystals? a. I alss hale b. Why do you think it was necessary for the water to bè cold Ttis neressam For the w becavse itiatw melt thestals Instructor Initials_ CHL 161 Experiment #8 (Rev. 1/7/2019)
4. While filtering your product on the Buchner funnel, you washed the crystals with 15 mL of cold...
Once a solvent for recrystallization is chosen, why is it important to use the minimum amount...
Once a solvent for recrystallization is chosen, why is it important to use the minimum amount possible?
Choose four requirements that must be met when choosing a solvent for recrystallization. Solute must be...
Choose four requirements that must be met when choosing a solvent for recrystallization. Solute must be soluble both at room temperature and the boiling point. Solvent must be easily removed (i.e., have a low boiling point and high vapor pressure). Solute may react with the solvent, as long as the reaction is incomplete. Impurities must be insoluble at the boiling point or soluble at room temperature. A small amount of crystals should be obtained. A fine powder should be obtained...
6. A certain amount of 'solvent A' will dissolve 32 grams of acetaminophen (Tylenol) at room...
6. A certain amount of 'solvent A' will dissolve 32 grams of acetaminophen (Tylenol) at room temperature and 35 grams at 100°C. The same amount of 'solvent B' will dissolve 1.2 grams of acetaminophen at room temperature and 35 grams at 100°C. Which one of these two solvents will be suitable for the recrystallization of acetaminophen? Explain your reasoning 7. Aliter of boiling water will dissolve 97.5 grams of a certain compound. At room temperature, only 2.3 grams of the...
POST LAB QUESTIONS-USE GOOGLE SCHOLAR TO HELP FIND THE ANSWERS 1) How would you pick the good sol...
POST LAB QUESTIONS-USE GOOGLE SCHOLAR TO HELP FIND THE ANSWERS 1) How would you pick the good solvent for the recrystallization of your chemical? 2) List ten solvents used mostly for recrystallization. Provide in the table physical properties for these solvents that help choosing the best solvent. 3) Why do we use a very cold solvent to wash crystals? 4) Why is it preferable to use vacuum filtration and not regular one for recrystallization?
POST LAB QUESTIONS-USE GOOGLE SCHOLAR TO...
1. In order for a solution to generate heat when irradiated by microwaves the solvent must...
1. In order for a solution to generate heat when irradiated by
microwaves the solvent must have?
2. Identify what the solvent is for this reaction. Draw its
structure.
cetyl anthranilic acid into a large, dry, test tube place 0.68 g of anthranilic acid, 2.2 mL of acetic anhydride and a Doung chip. Upon the addition of the acetic anhydride the tube may become warm. Swirl the tubo brany to mix the reagents. Place the tube into a beaker. Place...
why is it important to use a minimum volume of hot solvent to dissolve an impure...
why is it important to use a minimum volume of hot solvent to dissolve an impure sample during recrystallization and why is it advisable to cool the solution of a mixture slowly during recrystallization?
4. While filtering your product on the Buchner funnel, you washed the crystals with 15 mL of cold water. What is the purpose of washing the crystals? a. I alss hale b. Why do you think it was necessary for the water to bè cold Ttis neressam For the w becavse itiatw melt thestals Instructor Initials_ CHL 161 Experiment #8 (Rev. 1/7/2019)
4. While filtering your product on the Buchner funnel, you washed the crystals with 15 mL of cold...
Once a solvent for recrystallization is chosen, why is it important to use the minimum amount possible?
Choose four requirements that must be met when choosing a solvent for recrystallization. Solute must be soluble both at room temperature and the boiling point. Solvent must be easily removed (i.e., have a low boiling point and high vapor pressure). Solute may react with the solvent, as long as the reaction is incomplete. Impurities must be insoluble at the boiling point or soluble at room temperature. A small amount of crystals should be obtained. A fine powder should be obtained...
6. A certain amount of 'solvent A' will dissolve 32 grams of acetaminophen (Tylenol) at room temperature and 35 grams at 100°C. The same amount of 'solvent B' will dissolve 1.2 grams of acetaminophen at room temperature and 35 grams at 100°C. Which one of these two solvents will be suitable for the recrystallization of acetaminophen? Explain your reasoning 7. Aliter of boiling water will dissolve 97.5 grams of a certain compound. At room temperature, only 2.3 grams of the...
POST LAB QUESTIONS-USE GOOGLE SCHOLAR TO HELP FIND THE ANSWERS 1) How would you pick the good solvent for the recrystallization of your chemical? 2) List ten solvents used mostly for recrystallization. Provide in the table physical properties for these solvents that help choosing the best solvent. 3) Why do we use a very cold solvent to wash crystals? 4) Why is it preferable to use vacuum filtration and not regular one for recrystallization?
POST LAB QUESTIONS-USE GOOGLE SCHOLAR TO...
1. In order for a solution to generate heat when irradiated by
microwaves the solvent must have?
2. Identify what the solvent is for this reaction. Draw its
structure.
cetyl anthranilic acid into a large, dry, test tube place 0.68 g of anthranilic acid, 2.2 mL of acetic anhydride and a Doung chip. Upon the addition of the acetic anhydride the tube may become warm. Swirl the tubo brany to mix the reagents. Place the tube into a beaker. Place...
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