EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
6th Edition
ISBN: 9781305687875
Author: Gilbert
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 3.2, Problem 6E
a)
Interpretation Introduction
Interpretation:Use of filter flask during recrystallization at miniscale level should be determined.
Concept introduction:Recrystallization is technique that is used for purification of organic compounds. This process includes dissolution of solid in specific solvent at high temperature and then crystals are made again by process of cooling. Temperature of crystals is decreased to allow impurities to remain in solution only.
b)
Interpretation Introduction
Interpretation: Use of filter trap during recrystallization at miniscale level should be determined.
Concept introduction: Recrystallization is technique that is used for purification of organic compounds. This process includes dissolution of solid in specific solvent at high temperature and then crystals are made again by process of cooling. Temperature of crystals is decreased to allow impurities to remain in solution only.
c)
Interpretation Introduction
Interpretation: Use of Buchner funnel during recrystallization at miniscale level should be determined.
Concept introduction: Recrystallization is technique that is used for purification of organic compounds. This process includes dissolution of solid in specific solvent at high temperature and then crystals are made again by process of cooling. Temperature of crystals is decreased to allow impurities to remain in solution only.
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Students have asked these similar questions
Which of these is NOT true of a good recrystallization solvent?
Which of these is NOT true of a good recrystallization solvent?
a) The compound is insoluble in the solvent when it is cold.
b) The solvent boiling temperature is at least 40 °C.
c) The solvent has many impurities.
d) The compound is soluble in the solvent when it is hot.
One of the problems that can be encountered in recrystallization is the failure of the solute to crystallize. In which of the following scenarios could that happen?
a.
Cooling the filtrate in an ice bath.
b.
Using a wide bore, long-stemmed funnel in the hot filtration step.
c.
Addition of too much water in the receiving flask.
d.
Washing the residue with cold solvent
Volumetric pipettes are designed to deliver a precise amount of liquid, but only if you
a. submerge the end of the pipette into a solution you are delivering.
b. allow the pipette to drain freely, and leave any residual solution in the pipette.
c. hold the pipette at a 45 degree angle and ensure that all the liquid is delivered.
Chapter 3 Solutions
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
Ch. 3.2 - Prob. 1ECh. 3.2 - Prob. 2ECh. 3.2 - Prob. 3ECh. 3.2 - Prob. 4ECh. 3.2 - Prob. 5ECh. 3.2 - Prob. 6ECh. 3.2 - Prob. 7ECh. 3.2 - Prob. 8ECh. 3.2 - Prob. 9ECh. 3.2 - Prob. 10E
Ch. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - Prob. 13ECh. 3.2 - Prob. 14ECh. 3.2 - Prob. 15ECh. 3.2 - Prob. 16ECh. 3.2 - Prob. 17ECh. 3.2 - Prob. 18ECh. 3.2 - Prob. 19ECh. 3.2 - Prob. 20ECh. 3.2 - Prob. 21ECh. 3.2 - Prob. 22ECh. 3.2 - Prob. 23ECh. 3.2 - Prob. 24ECh. 3.2 - Prob. 25ECh. 3.2 - Prob. 26ECh. 3.2 - Prob. 27ECh. 3.2 - Prob. 28ECh. 3.2 - Prob. 29ECh. 3.2 - Prob. 30ECh. 3.2 - Prob. 31ECh. 3.2 - Prob. 32ECh. 3.2 - Prob. 34ECh. 3.3 - Prob. 1ECh. 3.3 - Prob. 2ECh. 3.3 - Prob. 3ECh. 3.3 - Prob. 4ECh. 3.3 - Prob. 5ECh. 3.3 - Prob. 6ECh. 3.3 - Prob. 7ECh. 3.3 - Prob. 8ECh. 3.3 - Prob. 10ECh. 3.3 - Prob. 11ECh. 3.3 - Prob. 12ECh. 3.3 - Prob. 13ECh. 3.3 - Prob. 14ECh. 3.3 - Prob. 15ECh. 3.3 - Prob. 16ECh. 3.3 - Prob. 17ECh. 3.3 - Prob. 18ECh. 3.3 - Prob. 19ECh. 3.3 - Prob. 21ECh. 3.3 - Prob. 22ECh. 3.3 - Prob. 23ECh. 3.3 - Prob. 24ECh. 3.3 - Prob. 25ECh. 3.3 - Prob. 26E
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- Select all of the options below that are used to increase the purity in the purification of crystals. Stirring the solution after mixing. Filtering the crystals Recrystallization at least once. Slow cooling during crystallization. Heating the pure crystals Fast cooling during crystallization.arrow_forwardWhich statement is valid when the multiple extraction and single extraction is compared. The effciency of multiple extraction and single extraction is incomparable. Single extraction and multiple extraction have the same effciency Multiple extraction is more efficent than single extraction Single extraction is more efficient than multiple extractionarrow_forward1. Explain the importance of using a thermometer in the simple distillation setup. 2. Enumerate the characteristics of a substance for it to be separated from the heterogeneous mixture by steam distillation. 3. How does steam facilitate the distillation of essential oils? 4. Discuss some applications of simple distillation and steam distillation. Explain why you can use each method for the chosen application.arrow_forward
- If you use castor oil, water, and acacia to prepare emulsion, what is the optimum ratio of these ingredients to be taken? A. 4:1:2 В. 4:2:1 C. 3:2:1 D. 4:3:2 Which of the following feature is noticed in the flocculated suspensions A. Sediment is tightly packed. B. Sedimentation that occurs at the bottom of the container is time-consuming. C. The supernatant liquid becomes cloudless at a shorter time. D. Redistribution of the sedimented particles by shaking the container is hard.arrow_forwardMultiple choice. Please check my asnwers from numbers 5-9 if they are correct. Thank you!arrow_forward5. Do you think the toluene/water combination would be a good binary solvent system for a mixed recrystallization? Yes or No. Explain your answer.arrow_forward
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