2.1g of sample are dissolved in methylene chloride and the sample is extracted with an aqueous solution of acid and base. Three compounds are isolated - 0.7g of ethyl p-aminobenzoate, 0.6 g of acetanilide, and 0.5 g of benzoic acid. Calculate the % composition of ethyl p-aminobenzoate in the recovered mixture. (Round the answer to 1 significant figure. Give just the number, not a % sign.)

2.1g of sample are dissolved in methylene chloride and the sample is extracted with an aqueous solution of acid and base. Three compounds are isolated - 0.7g of ethyl p-aminobenzoate, 0.6 g of acetanilide, and 0.5 g of benzoic acid. Calculate the % composition of ethyl p-aminobenzoate in the recovered mixture. (Round the answer to 1 significant figure. Give just the number, not a % sign.)

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter7: Extraction

Section: Chapter Questions

Problem 1Q

See similar textbooks

Similar questions

Your employer hands you a heterogeneous mixture and asks you to isolate all of thehexane that you can from it. After some analysis, you determine that the mixture contains toluene, hexane,benzoic acid, water, sodium chloride, and sand. Explain how you would isolate pure hexane from thismixture. Remember that you can use techniques such as filtration, extractions, and acid/base chemistrythat we learned earlier in this course in addition to distillation. You may need to look up solubilities and/orboiling points online to solve this problem. You only need to isolate the hexane?
2.1g of sample are dissolved in methylene chloride and the sample is extracted with aqueous solutions of acid and base. Three compounds are isolated - 0.8g of ethyl p-aminobenzoate, 0.6 g of acetanilide, and 0.5 g of benzoic acid. Calculate the % recovery for the procedure. (Round the answer to the nearest tens place.) Give just the number, not a % sign.)
What is the purpose of adding sodium carbonate in the mixture of water and water- soluble components obtained from the solid-liquid extraction step of isolation of alkaloids from tea leaves? A.Increases the solubility of alkaloids in water thus ensuring maximum yield B.deprotonates tannins so that they will remain in the aqueous layer during liquid-liquid extraction C.'hydrolyses cellulose thus separating it along with other water-soluble components D.protonates the alkaloid to make the solution acidic
Assume that 3.0 g of aniline and 4.5 ml of acetic anhydride are used in the preparation of acetanilide. What is the limiting reagent? What is the theoretical yield of acetanilide? What is? the percentage yields if 3.3 g of acetanilide is obtained
Please help The petition coeficiente between benzene and water for carta iLife is approximately 3.9 .you are given a 0.35 g sample of acetanilide dissolved in 100ml of water Which of the following extraction techniques will give q better recovery of.acetanilide from water A) one extraction with 60ml of benzene or b) two successive extractions with 30ml portions of benzene? Show calculation
Propose you are given a mixture of naphthalene, propanoic acid, and diethyl amine. Explain, using a flow chart similar to that in #1, how you would separate these three compounds. Include all solvents and reagents, show the exact compound that is present at each juncture, and be clear about the experimental technique employed in each step.
In the isolation of caffeine from coffee experiment, the dichloromethane solution was washed with strong base. Explain a possible reason for this.
An organic chemistry laboratory Extraction; the extraction of crude naphtalene- benzoic acid mixture. Naphthalene is a suspect carcinogen and is toxic to aquatic life. Find an alternative pair of molecules that adhere better to the principles of green chemistry and can be separated by extraction using green' solvents. (kindly answer fully)
Given that naphthalene is insoluble in water and sublimes easily upon heating, describe two methods by which you could separate naphthalene and NaCL.
In preparation of p-Nitroaniline, Starting material is 50g of p-nitroacetanilide, 22ml of HCI, 20g of p-nitroaniline. Give % yield of nitro acetanilide.
Given the balanced reaction between salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to produce ASA or acetylsalicylic acid (C9H8O4) and acetic acid (C2H4O2), the following experimental materials are provided: 5.00 g of pure salicylic acid, 7.14 g of acetic anhydride and 8 drops concentrated sulfuric acid as catalyst. After successful synthesis, the group was able to collect 5.25 grams of acetylsalicylic acid. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL). What is the THEORETICAL yield of ASA in the experiment?
Given the balanced reaction between salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to produce ASA or acetylsalicylic acid (C9H8O4) and acetic acid (C2H4O2), the following experimental materials are provided: 5.00 g of pure salicylic acid, 7.14 g of acetic anhydride and 8 drops concentrated sulfuric acid as catalyst. After successful synthesis, the group was able to collect 5.25 grams of acetylsalicylic acid. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL). What is the PERCENTAGE in the experiment?