Macroscale and Microscale Organic Experiments
7th Edition
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Kenneth L. Williamson, Katherine M. Masters
Chapter5: Distillation
Section: Chapter Questions
Problem 7Q: In fractional distillation, liquid can be seen running from the bottom of the distillation column...
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1. In recrystallization, the goal is to obtain a purified material with maximum recovery? What are the effects of the operations below on purity and recovery? Explain briefly.
a. In the solution step, an unnecessarily large volume of solvent is used.
i. Effect on purity:
ii. Effect on recovery:
b. The crystals obtained are washed with cold solvent.
I. Effect on purity:
II. Effect on recovery:
C. The crystals referred to in (b) are washed with hot solvent.
I. Effect on purity:
II. Effect on recovery:
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