If you have 3.03 g of caffeine dissolved in 59.4 mL of water and the extraction...
If you have 3.03 g of caffeine dissolved in 59.4 mL of water and the extraction coefficient between H2O and CH2Cl2 is 21.51. How many grams of caffeine will extract into the CH2Cl2 layer if you use 78.0 mL?
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If you have 3.03 g of caffeine dissolved in 59.4 mL of water and
the extraction...
1.) What percent recovery could be expected if 1.000 g of caffeine was initially dissolved in...
1.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted with a single 80 mL portion of ethyl acetate?
2.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted as per the protocol given in the lab manual?
3.) Percent recovery and percent yield are occasionally used as
if they are interchangeable terms. They...
In this experiment, 0.170 g of caffeine is dissolved in 10.0 mL of water. The caffeine...
In this experiment, 0.170 g of caffeine is dissolved in 10.0 mL of water. The caffeine is extracted from the aqueous solution three times with 5.0-mL portions of methylene chloride. Calculate the total amount of caffeine that can be extracted into the three portions of methylene chloride (see Technique 12, Section 12.2). Caffeine has a distribution coefficient of 4.6 between methylene chloride and water.In this experiment, 0.170 g of caffeine is dissolved in 10.0 mL of water. The caffeine is...
0.070 g of caffeine is dissolved in 4.0 mL of water. The caffeine is extracted from...
0.070 g of caffeine is dissolved in 4.0 mL of water. The caffeine is extracted from the aqueous solution three times in 2.0 mL portions of methylene chloride. Calculate the total amount of caffeine that can be extracted into the three portions of methylene chloride. Caffeine has a distribution coefficient of 4.6, between methylene chloride and water.
Let's assume the distribution coefficient of caffeine between dichloromethane and water is 3. You have a...
Let's assume the distribution coefficient of caffeine between dichloromethane and water is 3. You have a 10mL aqueous solution of caffeine that contains 100mg of caffeine dissolved in it. You also have 10mL dichloromethane. If you do just one extraction using 10mL dichloromethane, how much caffeine you can recover from the aqueous solution? 25mg 50mg 75mg 100mg None of the above QUESTION 3 Let's assume the distribution coefficient of caffeine between dichloromethane and water is 3. You have a 10mL...
In this experiment, 0.070 g of caffeine is dissolved in 4.0 ml of water. The caffeine...
In this experiment, 0.070 g of caffeine is dissolved in 4.0 ml of water. The caffeine is extracted for the aqueous solution 3 times with 2.0 ml portions of methylene chloride. The methylene chloride extracts are combined and the solvent evaporated resulting in isolated caffeine crystals. Briefly explain why caffeine will prefer the methylene chloride solvent to the water solvent. You need to draw the structures for all three compounds.
The extraction of 8.0 g of a particular organic compound dissolved in 100 ml of water...
The extraction of 8.0 g of a particular organic compound dissolved in 100 ml of water into diethyl ether proceeds with a distribution coefficient of 5. How much of the compound is extracted after three separate extractions using 50 ml of diethyl ether each time? ***Please show work as I am not 100% sure how to solve for X**** Thank you!
Assume an organic compound has a partition coefficient between water and ether equal to 8.48. If...
Assume an organic compound has a partition coefficient between water and ether equal to 8.48. If there are initially 7.52 grams of the compound dissolved in 70.0 mL of water, how many grams will remain in the aqueous layer after extraction with two 25.0 mL portions of ether? Mass: ________ g
experiment-2-coffeine-extraction-l.pdf
Introduction: Pre-lab Questions Turn in typed responses in the beginning of lab. Answer in complete sentences. Show your work in pen where applicable. 1. What other compounds are extracted along with caffeine into the tea? Use what you know about the relative polarity of the functional groups within these compounds to determine the final destination of the following compounds: cellulose, tannins, chlorophylls, sodium carbonate. Do the majority of these compounds end up in the tea bag, filtered solid, aqueous layer,...
Assume an organic compound has a partition coefficient between water and ethyl acetate equal to 9.61....
Assume an organic compound has a partition coefficient between water and ethyl acetate equal to 9.61. If there are initially 7.33 grams of the compound dissolved in 90.0 mL of water, how many grams will remain in the aqueous layer after extraction with two 10.0 mL portions of ethyl acetate?
46.7 g of caffeine (C3H 10N402, 194g/mol) is dissolved in 847 mL of water (H20, 18.0...
46.7 g of caffeine (C3H 10N402, 194g/mol) is dissolved in 847 mL of water (H20, 18.0 g/mol). The density of water is 1.00 g/mL. What is the mole percent of caffeine in the solution? 28.4% 5.51% 0.509% 0.512%
1.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted with a single 80 mL portion of ethyl acetate?
2.) What percent recovery could be expected if 1.000 g of
caffeine was initially dissolved in 120 mL of water and then
extracted as per the protocol given in the lab manual?
3.) Percent recovery and percent yield are occasionally used as
if they are interchangeable terms. They...
46.7 g of caffeine (C3H 10N402, 194g/mol) is dissolved in 847 mL of water (H20, 18.0 g/mol). The density of water is 1.00 g/mL. What is the mole percent of caffeine in the solution? 28.4% 5.51% 0.509% 0.512%
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