Homework Answers
any water in the organic solvent can be removed by using drying agent. CaCl2 or MgSO4 has the property of drying .so when calcium chloride is added to dichloromethane,it helps in removing the extra water that might be present in the organic layer by absorbing the water molecules on its surface,thus making the organic layer water free.so the purpose is to use as a drying agent
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Abbutie uit water and your solvent of interest are not miscible. 2. What is the purpose of adding anhydrous CaCl, (...
Grignard reaction What is the purpose of adding anhydrous MgSO4 to the ether solution? What would...
Grignard reaction What is the purpose of adding anhydrous MgSO4 to the ether solution? What would occur if this step were omitted?
2. For each solvent, indicate if it is miscible with each other solvent. If it is...
2. For each solvent, indicate if it is miscible with each other solvent. If it is miscible, put an "M" in the box If it is not miscible, put and "X" in the box. methylene chloride diethyl ether acetone chloroform ethyl acetate water methylene chloride ethyl acetate diethyl ether chloroform 3. Brine (aqueous NaCl solution) is often used in extraction procedures. The concentration of a saturated brine solution is 358 g of NaCl in 1.00 kg of water giving a...
4. what is the purpose of adding the anhydrous sodium sulfate to GC-MS vial and filtering...
4. what is the purpose of adding the anhydrous sodium sulfate to GC-MS vial and filtering it? what might happen during the GC-MS analysis if we didn't perform these steps?
Questions 1. Suppose that you are performing an extract solvent that has a density less than...
Questions 1. Suppose that you are performing an extract solvent that has a density less than water. Propos the organic solvent. Assume that water and your son extraction of an aqueous solution with an organic Fropose a method to identify and collect only and your solvent of interest are not miscible. the dichloromethane?
(1) De (2) Wh in water? (3) What is the purpose of washing with water after...
(1) De (2) Wh in water? (3) What is the purpose of washing with water after extraction with a reaction solvent? (4) What is the purpose of using a tared test tube? (5) W (6) What is the purpose of using a porous plate? (7) Why should a piece of weighing paper be put under the porous plate? (8) Why should you not touch the crystals with your fingers? fine: take up, wash with water, drying agent, absorb, mother liquor...
What is the purpose of adding 50% sodium hydroxide solution in Wittig reaction.
Question 13 What is the purpose of adding 50% sodium hydroxide solution in Wittig reaction. A) reactant B) recrystallization C) deprotonation D) Solvent Question 14 What is the purpose of anhydrous calcium chloride pellets in wittig reaction. A) Drying aqueous layer B) Reactant C) Reagent D) Drying organic layer Question 15 Provide the structure of the ylide needed to prepare 3-ethyl-3-heptene from 3-pentanone using a Wittig reaction.
what is the purpose of adding kcn to the water sample for the titration with EDTA
what is the purpose of adding kcn to the water sample for the titration with EDTA
Recrystallization/Melting Point 2-ethoxybenzamide is the unknown. 1. Adding enough solvent to achieve a “saturated” solution is...
Recrystallization/Melting Point 2-ethoxybenzamide is the unknown. 1. Adding enough solvent to achieve a “saturated” solution is necessary for recrystallization. a. What is the problem with adding too much solvent? b. What is the problem with adding too little solvent? 2. Why is fluted filter paper preferred over standard conical filter paper for the filtration of the recrystallized solid? 3. What is the purpose of adding boiling stones when heating solutions to a boil? 4. Name 2 requirements that must be...
Hand in this assignment as you ente Grade Name water and hexane miscible (soluble) or immiscible?...
Hand in this assignment as you ente Grade Name water and hexane miscible (soluble) or immiscible? b. Explain. c. Which is the top layer? d. Explain. (1 ) 2. What is the purpose of ac the purpose of adding hexane to the aqueous solutions of halogens? (2 points) Why do you discard solutions containing hexane in the separatory funnel instead of the organic waste container? (2 points) 4. Write the formulas for the diatomic halogens in order of increasing strength...
What was the purpose of adding water to the sample of vinegar used for the titration?
What was the purpose of adding water to the sample of vinegar used for the titration? The added volume was not considered in the calculations. Why was it ignored?
2. For each solvent, indicate if it is miscible with each other solvent. If it is miscible, put an "M" in the box If it is not miscible, put and "X" in the box. methylene chloride diethyl ether acetone chloroform ethyl acetate water methylene chloride ethyl acetate diethyl ether chloroform 3. Brine (aqueous NaCl solution) is often used in extraction procedures. The concentration of a saturated brine solution is 358 g of NaCl in 1.00 kg of water giving a...
4. what is the purpose of adding the anhydrous sodium sulfate to GC-MS vial and filtering it? what might happen during the GC-MS analysis if we didn't perform these steps?
Questions 1. Suppose that you are performing an extract solvent that has a density less than water. Propos the organic solvent. Assume that water and your son extraction of an aqueous solution with an organic Fropose a method to identify and collect only and your solvent of interest are not miscible. the dichloromethane?
(1) De (2) Wh in water? (3) What is the purpose of washing with water after extraction with a reaction solvent? (4) What is the purpose of using a tared test tube? (5) W (6) What is the purpose of using a porous plate? (7) Why should a piece of weighing paper be put under the porous plate? (8) Why should you not touch the crystals with your fingers? fine: take up, wash with water, drying agent, absorb, mother liquor...
Hand in this assignment as you ente Grade Name water and hexane miscible (soluble) or immiscible? b. Explain. c. Which is the top layer? d. Explain. (1 ) 2. What is the purpose of ac the purpose of adding hexane to the aqueous solutions of halogens? (2 points) Why do you discard solutions containing hexane in the separatory funnel instead of the organic waste container? (2 points) 4. Write the formulas for the diatomic halogens in order of increasing strength...
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