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OWLv2 with LabSkills for Gilbert/Martin's Experimental Organic Chemistry: A Miniscale & Microscale Approach, 6th Edition, [Instant Access], 4 terms (24 months)
6th Edition
ISBN: 9781305387676
Author: John C. Gilbert; Stephen F. Martin
Publisher: Cengage Learning US
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Question
Chapter 3.2, Problem 3E
Interpretation Introduction
Interpretation:Whether recrystallization is appropriate to be performed for situations or not should be explained.
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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Describe a procedure "fix" to solve the following recrystallization problems:
A. No crystals are formed when the solution reaches room temperature.
B. Colored impurities are present.
C. Crystals are left on the filter paper during gravity filtration.
In an experiment, is a 100% yield possible in recrystallization? Please explain.
Chapter 3 Solutions
OWLv2 with LabSkills for Gilbert/Martin's Experimental Organic Chemistry: A Miniscale & Microscale Approach, 6th Edition, [Instant Access], 4 terms (24 months)
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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Similar questions
- In fractional distillation, liquid can be seen running from the bottom of the distillation column back into the distilling flask. What effect does this returning condensate have on the fractional distillation?arrow_forward13. How can you induce recrystallization in a solution? a. Scratch inside of beaker with glass rod b. Cool solution c. Seed the solution with pure compound d. Concentrate the solution to create supersaturation e. All of the above Your answer:arrow_forwardOne 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 solventarrow_forward
- Briefly explain why crystals form as the solvent cools during recrystallization.arrow_forwardWhat is brewing tea in water an example of? A. solid-liquid extraction B. liquid-liquid extraction C. none of the above D. recrystallization E. all of the abovearrow_forward2. When performing the recrystallization of an impure solid, why is it advised to use the minimal amount of solvent possible? Group of answer choices To minimize the amount of pure solid lost due to its solubility. To minimize the cost of the recrystallization. To reduce the time needed to filter the pure solid from the solvent after recrystallization. To minimize the amount of hazardous materials used.arrow_forward
- When conducting a recrystallization what should generally be true when comparing the compounds melting point compared to the boiling point of the solvent? Explain why this is so.arrow_forwardWhat is the major difference in set up between a simple distillation and a fractional distillation? O A. A fractionating column used during fractional distillation B. Simple distillation does not need a condenser. OC. Fractional distillation needs a longer fractionating column. D. There is no difference in set up between a simple distillation and a fractional distillation,arrow_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
- Once you choose the appropriate solvent, how much solvent should you add to your sample to dissolve? What do you think could happen if you add too much solvent? What could be a reason for your sample not dissolving in the appropriate solvent?arrow_forwardAssume that your compound recrystallizes equally well from benzyl alcohol and isopropyl alcohol. Which solvent is the better choice for recrystallization? a. Benzyl alcohol because it is miscible with water. b. Isopropyl alcohol is better because it has a much lower boiling point and is easier evaporate off c. A mixed solvent - benzyl alcohol and isopropyl alcohol d. It doesn't matter which one if they work equally in the recrystallization process.arrow_forwardA rubbing alcohol sample composed of 60% isopropyl alcohol and water was distilled using a simple distillation setup. If the temperature reading is 100°C, what is the composition of the distillate? a. Pure isopropyl alcoholb. Pure waterc. Cannot be determinedd. Water and isopropyl alcoholarrow_forward
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