The distribution constant between ether and water for cocaine at room temperature is 7.5. What weight...
The distribution constant between ether and water for cocaine at room temperature is 7.5. What weight of cocaine would be removed from a solution of 8 g of cocaine in 500 mL of water by a single extraction with 150 mL of ether? Show work please!
Homework Answers
The amount of solute in aqueous phase is given as:-
qaq. = Vaq/ (D×Vorg + Vaq.)
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The distribution constant between ether and water for cocaine at
room temperature is 7.5. What weight...
The distribution coefficient between methylene chloride and water for solute Y is 9. An amount of...
The distribution coefficient between methylene chloride and water for solute Y is 9. An amount of 125.0.0 g of Y is dissolved in 160 mL of water. a) What weight of Y would be removed from water with a single extraction with 160-mL of methylene chloride? Report to 1 decimal place. b) What weight of Y would be removed from water (the original solution with the original amount) with two successive extractions with 80-mL portions each of methylene chloride? Report...
Suppose solute A has a distribution coefficient of 1.0 between water and diethyl ether. Demonstrate that...
Suppose solute A has a distribution coefficient of 1.0 between water and diethyl ether. Demonstrate that if 4.0 mL of a solution of 0.20 g of A in water were extracted with two 1.0-mL portions of ether, a smaller amount of A would remain in the water that if the solution were extracted with one 2.0-mL portion of ether.
What is the solubility of water in diethyl ether at room temperature? Please show all steps.
What is the solubility of water in diethyl ether at room temperature? Please show all steps.
Using your notetbook (which should have any equaitons/tables/ vital information) answer the questions below. Showing ALL...
Using your notetbook (which should have any equaitons/tables/ vital information) answer the questions below. Showing ALL math when needed. (20 pts) 1. The pain reliever phenacetin is soluble in cold water to an extent of 1.0 g/1310 ml and soluble in diethyl ether to an exient of 1.0 g/90ml. Determine the approximate distribution coefficient for phenacetin in those two solvents. (6 pts) 2. Why must the stopper be removed from the separatory funnel before the lower layer is removed? (4...
Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute.If the distribution...
Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute.If the distribution coefficient for the solute between ether and water is 20, calculate the percent of the compound that can be recovered with a single extraction with 26.8 mL of ether. (2 sig figs)
What is the mass, in grams, of 28.33 cubic centimeters of pure water at room temperature?...
What is the mass, in grams, of 28.33 cubic centimeters of pure water at room temperature? Note: The density of pure water at room temperature is 1 g per mL, exactly. Also, a cube of unknown metal measures 1.8 in by .60 in by 1.2 in and has a mass of 189.65 g. What is the identity of the unknown metal? must show work for both
Isolation of Caffeine 1. Suppose that in the laboratory preparation of malononitrile, CH.C(CN), the reaction mixture,...
Isolation of Caffeine 1. Suppose that in the laboratory preparation of malononitrile, CH.C(CN), the reaction mixture, when diluted with water, afforded 300 mL of an aqueous solution of 30 g of the reaction product malononi- trile, CH2(CN), which is to be isolated by extraction with ether. The solubility of malononitrile in ether at room temperature is 20.0 g per 100 ml: in water it is 13.3 g per 100 mL. What weight of Ile would be recovered by extraction with...
Solute W has a distribution coefficient of 1.0 between water and ether. 320 mg of W...
Solute W has a distribution coefficient of 1.0 between water and ether. 320 mg of W are dissolved in 10 ml of water. If this solution is extracted five times with 10 ml of ether. How much of solute W will be in the combined organic phase?
please solve number 5 and 6 using the table. Part 1: Simple Extraction and Determination of the Distribution Coeffi...
please solve number 5 and 6 using the table.
Part 1: Simple Extraction and Determination of the Distribution Coefficient (Partition Coefficient) for Propionic Acid Between Ether and Water Table 1 (a) Preparation of Propionic Acid (PA) Solution weight PA Volume H2O (g) (e) Titration of Aqueous Propionic Solution After Ether Extraction (b) Titration of Aqueous Propionic Acid Solution Before Ether Extraction Volume PA. Volume NaOH Volume Volume PA Aliquot (mL) aliquot (mL) NaOH (mL) (mL) (mL) 17.30 mL50.00 mL 10-00...
What is the amt of ammonium chloride solution, ether for extraction, brine for extraction and MgSO4 needed. Please s...
What is the amt of ammonium chloride solution, ether
for extraction, brine for extraction and MgSO4 needed. Please show
calculations!
Suggestion: Weigh the sucrose directly into a flask. Measule uut liie Wutur using a measuring cylinder. Weigh out the ethyl acetoacetate and add by pipet Reduction using Sodium Borohydride Weigh ethyl acetoacetate (1.5 g) into a round bottomed flask. Add ethanol (15 mL) to dissolve it. Add a magnetic stir bar and fit the flask with a drying tube. Cool...
Using your notetbook (which should have any equaitons/tables/ vital information) answer the questions below. Showing ALL math when needed. (20 pts) 1. The pain reliever phenacetin is soluble in cold water to an extent of 1.0 g/1310 ml and soluble in diethyl ether to an exient of 1.0 g/90ml. Determine the approximate distribution coefficient for phenacetin in those two solvents. (6 pts) 2. Why must the stopper be removed from the separatory funnel before the lower layer is removed? (4...
Isolation of Caffeine 1. Suppose that in the laboratory preparation of malononitrile, CH.C(CN), the reaction mixture, when diluted with water, afforded 300 mL of an aqueous solution of 30 g of the reaction product malononi- trile, CH2(CN), which is to be isolated by extraction with ether. The solubility of malononitrile in ether at room temperature is 20.0 g per 100 ml: in water it is 13.3 g per 100 mL. What weight of Ile would be recovered by extraction with...
please solve number 5 and 6 using the table.
Part 1: Simple Extraction and Determination of the Distribution Coefficient (Partition Coefficient) for Propionic Acid Between Ether and Water Table 1 (a) Preparation of Propionic Acid (PA) Solution weight PA Volume H2O (g) (e) Titration of Aqueous Propionic Solution After Ether Extraction (b) Titration of Aqueous Propionic Acid Solution Before Ether Extraction Volume PA. Volume NaOH Volume Volume PA Aliquot (mL) aliquot (mL) NaOH (mL) (mL) (mL) 17.30 mL50.00 mL 10-00...
What is the amt of ammonium chloride solution, ether
for extraction, brine for extraction and MgSO4 needed. Please show
calculations!
Suggestion: Weigh the sucrose directly into a flask. Measule uut liie Wutur using a measuring cylinder. Weigh out the ethyl acetoacetate and add by pipet Reduction using Sodium Borohydride Weigh ethyl acetoacetate (1.5 g) into a round bottomed flask. Add ethanol (15 mL) to dissolve it. Add a magnetic stir bar and fit the flask with a drying tube. Cool...
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