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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 27E
Interpretation Introduction
Interpretation:Purpose to scratch inside of flask with glass rod should be determined. Also, other methods to induce crystallization 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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In an experiment, is a 100% yield possible in recrystallization? Please explain.
Briefly explain how slow cooling contributes to the formation of pure crystals during recrystallization.
An ideal solvent to use for recrystallization is one that:
Group of answer choices
dissolves the desired compound in ice-cold water temperature but does not dissolve the desired compound at its boiling temperature.
a solvent in which the desired compound dissolves at any temperature.
a solvent that reacts with the desired compound.
dissolves the desired compound at its boiling temperature but does not dissolve the desired compound in ice-cold temperature.
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
- Vapor-pressure lowering is a colligative property, as are freezing-point depression and boiling-point elevation. What is a colligative property? Why is the freezing point depressed for a solution as compared to the pure solvent? Why is the boiling point elevated for a solution as compared to the pure solvent? Explain how to calculate T for a freezing-point depression problem or a boiling-point elevation problem. Of the solvents listed in Table 10-5, which would have the largest freezing-point depression for a 0.50 molal solution? Which would have the smallest boiling-point elevation for a 0.50 molal solution? A common application of freezing-point depression and boiling-point elevation experiments is to provide a means to calculate the molar mass of a nonvolatile solute. What data are needed to calculate the molar mass of a nonvolatile solute? Explain how you would manipulate these data to calculate the molar mass of the nonvolatile solute.arrow_forwardIn recrystallization, is it always good to have a high % recovery? Explain. What are the advantages and disadvantages of recrystallization?arrow_forwardGive a fundamental description of the recrystallization process. Explain why it is required and how it can be executed.arrow_forward
- Just because there appears to be a good match between solubility characteristics between solute and solvent doesn’t mean you’ve found a good system. For example, benzyl alcohol appears to have favorable solubility characteristics with fluorenol, but it is a poor choice of solvent. Explain why this might be.arrow_forwardIn the technique of recrystallization, one step involves heating the solvent containing the solute to its boiling point and, after the solution is cooled to room temperature, cooling it further in an ice-water bath. Why is it important to operate at these temperature extremes during a recrystallization?arrow_forwardWhy is the freezing point of a pure solvent constant, while that a solution decrease with steady cooling?arrow_forward
- A chemist is given a nonelectrolyte white powder for analysis. 38.7 g of this substance is dissolved in 100.0 g of water. It is determined that the resulting solution freezes at -4.0°C. Additionally, the elemental composition of the substance is identified and found to be 40.0% C, 6.7% H and 53.3 % O by mass. Find the molecular formula of this unknown white powder using these experimental evidences (Kf of water: 1.86°C/m, C: 12 g/mol, H: 1 g/mol, O: 16 g/mol).arrow_forwardFractional distillation of the 50:50 mixture of two miscible liquids gave the following distillation curve. What are their boiling points?arrow_forward
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