EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
6th Edition
ISBN: 9781305687875
Author: Gilbert
Publisher: CENGAGE LEARNING - CONSIGNMENT
Question
Chapter 3.2, Problem 17E
Interpretation Introduction

Interpretation:Solvents or mixture of solvents that can be considered for recrystallization of solids A and b should be explained.

Concept introduction:Criteria mentioned below should be used to select solvent for recrystallization.

1. Solvent should be able to dissolve desired compound in itself at high temperatures but insoluble at low temperatures. In short, solvent with favorable temperature coefficient should be used for particular solute.

2. Solvent should be chosen in such way that impurities are either insoluble in it or remain moderately soluble in it at low temperatures.

3. Boiling point of desired solvent should be low so that it gets separated from crystals easily.

4. Boiling point of solvent should be less than melting point of solid under consideration.

5. There should be no reaction between solvent and substance that needs to be purified.

Blurred answer
Students have asked these similar questions
1 g of organic matter dissolved 20 times more in ether than water is dissolved in 500 cm3 of water. Organic matter will be extras from the aqueous phase using 20 cm3 of ether each time. How many times should the extraction phase be repeated to extraction at least 90% of organic matter massively?
1. What characteristics must a substance possess for it to be separated from a heterogeneous mixture by steam distillation? 2. Explain the role of steam in facilitating the distillation of essential oils. 3. Compare and contrast simple and steam distillation in terms of the type of mixtures separated by each technique. 4. What is/are the difference(s) between a simple distillation and steam distillation?
- Suppose your sample is mixed with other stuff that is not soluble in your recrystallization solvent. Whenfiltering, should you rinse with hot solvent or cold? Why? - Suppose you've isolated crystals of your sample and are now filtering them. Should you rinse with hotsolvent or cold? Why?
Knowledge Booster
Similar questions
    • SEE MORE QUESTIONS
    Recommended textbooks for you
  • EBK A SMALL SCALE APPROACH TO ORGANIC L
    Chemistry
    ISBN:9781305446021
    Author:Lampman
    Publisher:CENGAGE LEARNING - CONSIGNMENT
    Physical Chemistry
    Chemistry
    ISBN:9781133958437
    Author:Ball, David W. (david Warren), BAER, Tomas
    Publisher:Wadsworth Cengage Learning,
    Macroscale and Microscale Organic Experiments
    Chemistry
    ISBN:9781305577190
    Author:Kenneth L. Williamson, Katherine M. Masters
    Publisher:Brooks Cole
  • EBK A SMALL SCALE APPROACH TO ORGANIC L
    Chemistry
    ISBN:9781305446021
    Author:Lampman
    Publisher:CENGAGE LEARNING - CONSIGNMENT
    Physical Chemistry
    Chemistry
    ISBN:9781133958437
    Author:Ball, David W. (david Warren), BAER, Tomas
    Publisher:Wadsworth Cengage Learning,
    Macroscale and Microscale Organic Experiments
    Chemistry
    ISBN:9781305577190
    Author:Kenneth L. Williamson, Katherine M. Masters
    Publisher:Brooks Cole