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.)
Add Answer to:
The distribution constant between ether and water for cocaine at
room temperature is 7.5. What weight...
2) The distribution coefficient between methylene chloride and water for solute Y is 9. An amount...
2) The distribution coefficient between methylene chloride and water for solute Y is 9. An amount of 107.0 g of Y is dissolved in 150 mL of water. a) What weight of Y would be removed from water with a single extraction with 150-mL of methylene chloride? Report to 1 decimal place. b) What weight of Y would be removed from water (the original solution) with twosuccessive extractions with 75-mLportions each of methylene chloride? Report to 1 decimal place. 3)...
An unknown molecule has a KP (ether/water) of 3.5 at room temperature. If a solution of...
An unknown molecule has a KP (ether/water) of 3.5 at room temperature. If a solution of 350 mg of the compound in 2.5 mL of water is extracted with 5.0 mL of ether, what is the mass of the compound in both the ether and water layers? Comment on whether it is more efficient to use a single large extraction or multiple smaller extractions.
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?
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...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago