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.
13. 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:
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_forward6. In a recrystallization, why is it important to dissolve the solute in boiling solvent instead of cold solvent? a. To melt the solute b. To boil the solute c. To use as small amount of solvent to dissolve the solute as possible d. To chemically decompose the impuritiesarrow_forwardBriefly explain why crystals form as the solvent cools during recrystallization.arrow_forward
- 2. 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_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_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_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_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_forwardOnce 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_forward
- What is the theory behind recrystallization purifying a solid?arrow_forwardWhich of the following statements is true when considering temperature during a recrystallization? More than one answer may be correct. Using ice to cool the sample will speed up the crystallization process so that large crystals will be formed. It is important that the sample is dissolved in just enough hot solvent. O Ideally the hot solvent used will keep the impurities dissolved OR not dissolve them at all. Enough cold solvent should be added to dissolve the sample BEFORE heating it past its boiling point.arrow_forwardArrange the ff. into the correct order of recrystallization: a. prepare hot solution b. slow cooling c. cold filtration d. hot filtrationarrow_forward
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