Experimental Organic Chemistry: A Miniscale & Microscale Approach (Cengage Learning Laboratory Series for Organic Chemistry)
6th Edition
ISBN: 9781305080461
Author: John C. Gilbert, Stephen F. Martin
Publisher: Brooks Cole
expand_more
expand_more
format_list_bulleted
Question
Chapter 5.4, Problem 9E
Interpretation Introduction
Interpretation: The reason of performing a simple distillation needs to be determined from the given options.
Concept Introduction: Solvent extraction method is also called as liquid-liquid extraction. It is the method that is used to separate compounds on the basis of their relative solubility in two different immiscible solvents.
Here, the immiscible solvents cannot get mixed up together therefore they make two separate layers. In the extraction of a solute from one liquid, another immiscible solvent must be used. Usually water is used with certain organic solvent as organic solvent and water are immiscible into each other. At equilibrium the ratio of concentration of solute is constant in each layer that can be represented by partition coefficient or distribution coefficient. It is the ratio of the concentration of a substance in one medium (C1) to the concentration in a second medium (C2) at equilibrium.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
please answer all parts!
Which of the following should be done if there is no recrystallization due to the unsaturation of the solution?
(mixed solvent recrystallization)
a.
Crystal seeding
b.
Scratching the inner walls or bottom of container
c.
Further boiling of solvent
d.
Adding small amount of sample
a. What are the qualities of a perfect solvent for recrystallization?
b. How much solvent must be used in the recrystallization and why?
Chapter 5 Solutions
Experimental Organic Chemistry: A Miniscale & Microscale Approach (Cengage Learning Laboratory Series for Organic Chemistry)
Ch. 5.3 - Prob. 1ECh. 5.3 - Prob. 2ECh. 5.3 - Prob. 3ECh. 5.3 - Prob. 4ECh. 5.3 - Prob. 5ECh. 5.3 - Prob. 6ECh. 5.3 - Prob. 7ECh. 5.3 - Prob. 8ECh. 5.3 - Prob. 9ECh. 5.3 - Prob. 10E
Ch. 5.3 - Prob. 11ECh. 5.3 - Prob. 12ECh. 5.3 - Prob. 13ECh. 5.3 - Prob. 14ECh. 5.3 - Prob. 15ECh. 5.3 - Prob. 16ECh. 5.3 - Prob. 17ECh. 5.3 - Prob. 18ECh. 5.3 - Prob. 19ECh. 5.3 - Prob. 20ECh. 5.3 - Prob. 21ECh. 5.3 - Prob. 22ECh. 5.4 - Prob. 1ECh. 5.4 - Prob. 2ECh. 5.4 - Prob. 3ECh. 5.4 - Prob. 4ECh. 5.4 - Prob. 5ECh. 5.4 - Prob. 6ECh. 5.4 - Prob. 7ECh. 5.4 - Prob. 8ECh. 5.4 - Prob. 9ECh. 5.4 - Prob. 10ECh. 5.4 - Prob. 11ECh. 5.4 - Prob. 12E
Knowledge Booster
Similar questions
- Before answering the question, consider that it is during a recrystallization experiment.arrow_forwardExplain and elaborate how the following purification techniques work: a. Sublimation b. Recrystallizationarrow_forwardCREATE A SCHEMATIC DIAGRAM FOR THIS PROCEDURE: C. Preparation and storage of standard solutions 1. Use the weighed and transferred NaCl powder in procedure B. Dissolve it in about 10 mL distilled water. Use a stirring rod to gently stir the solution until it has been dissolved to an extent. Make sure you will not incur any noise while stirring. 2. When the NaCl powder is partially dissolved, transfer the resulting solution into a 100 mL volumetric flask. Use a stirring rod and funnel. 3. Repeat steps 1 and 2 until no NaCl remains in the beaker and until you are almost at the mark of the volumetric flask. 4. Rinse the last portion of the solution from the stirring rod into the volumetric flask with a stream of water from the wash bottle. Rinse the funnel and remove it. Dilute the solution in the flask using a Pasteur pipette until the bottom of the meniscus is even with the graduation mark. 5. Put a stopper on the volumetric flask. Invert the glassware up and down around five…arrow_forward
- Which fraction or extract is/ are positive for Guignard test? A. Aqueous fraction B. Hexane C. Ethyl acetate D. DCMarrow_forwardWhich of these solvent systems would cause a compound to elute from the column fastest (a, b, or c)? (Circle the one correct answer.)a. hexanes b. 1:1 hexanes:etherc. 1:1 ethyl acetate:acetone?arrow_forwardA. Measure 0.400 g of KMNO. using a 50-mL beaker as the sample pan. Make sure to press the tare button before placing KMN04. Do not return any excess chemical in the reagent bottle. B. Dissolve the KMNO, with 20.0 mL of distilled water. Stir gently to avoid any loss. c. Transfer the solution to a 100-mL volumetric flask fitted with a small funnel. To avoid spilling, use a stirring rod in transferring the solution. To remove the last drop, place the stirring rod on the sprout of the beaker. Wash the remaining potassium permanganate in the beaker by adding more water to the beaker, stir and transfer it again in the volumetric flask following the same procedure. Repeat this washing until no trace of the color of potassium permanganate remains. Record the number of washings made. D. Rinse the stirring rod, allowing the rinse water to flow into the volumetric flask. Finally rinse the funnel and remove it from the flask. Use the wash bottle in rinsing. E. Dilute the solution in the…arrow_forward
- Which of the following is true when preparing solutions? a. Make sure that the solvent and reagents are contaminated. b. When diluting to the mark using a volumetric flask, the upper meniscus and mark should be at eye level. c. If amount added is over the mark, you cannot just take out the excess liquid and preparation must be repeated. d. After mixing the contents of the flask and the level of the meniscus seems lower than the mark, add more diluent.arrow_forwardFill in the table below by choosing your answer to the options provided belowarrow_forward25. In the paper chromatography experiment on food dyes, salt water was used as the A. mobile phase B. stationary phase C. eluent D. solute E. sample spotsarrow_forward
- Which of the following is NOT TRUE about simple distillation? a. The greater the difference in the boiling points of the components, the better the separation. b. The less volatile component boils first and travels along the condenser. c. It can be applied to mixtures with components boiling below 150°C. d. A sand bath can be used in place of a water bath to provide even heating of the flask.arrow_forwardA student is trying to perform a single solvent recrystallization of compound X using methanol. He observed that compound X is insoluble in methanol at room temperature and also insoluble at boiling temperature. Is methanol a good recrystallization solvent? A. Yes, you want to only dissolve the impurities and the sample should remain undissolved. B. No, you need a solvent which fully dissolves the sample only at room temperature so that it can crystallize in the ice bath. C. No, you need a solvent which dissolves the sample only at boiling temperature for selective crystallization upon cooling. D. Yes, you don't want the solvent to fully dissolve the sample at both temperatures so that it will crystallize in the cooling step. A student obtained a supersaturated solution in the recrystallization experiment. Which of the following methods should he/she perform to induce crystal growth? (Can select more than 1) A. Add a crystal of pure acetylsalicylic acid B. Place the solution in an ice…arrow_forward6. Why is it dangerous to attempt a distillation in a completely closed systemarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT
Macroscale and Microscale Organic Experiments
Chemistry
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Brooks Cole