The goal of the recrystallization procedure is to obtain purified materlal with a maximized recovery. Which of the following will lower the percent recovery? . In the solution step, an unnecessarily large volume of solvent is used. 11. The crystals obtalned after filtration are not washed with fresh cold solvent before drying I. The crystals referred to in (I) are washed with fresh hot solvent. IV. Crystallization is accelerated by Immediately placing the flask of hot solution In an ice-water bath. V. A large quantity of decolorizing carbon is used.

The goal of the recrystallization procedure is to obtain purified materlal with a maximized recovery. Which of the following will lower the percent recovery? . In the solution step, an unnecessarily large volume of solvent is used. 11. The crystals obtalned after filtration are not washed with fresh cold solvent before drying I. The crystals referred to in (I) are washed with fresh hot solvent. IV. Crystallization is accelerated by Immediately placing the flask of hot solution In an ice-water bath. V. A large quantity of decolorizing carbon is used.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

The goal of the recrystallization procedure is to obtain purified material with a maximized recovery. Which of the following will
lower the percent recovery?
L. In the solution step, an unnecessarily large volume of solvent is used.
II. The crystals obtalned after filtration are not washed with fresh cold solvent before drying
I. The crystals referred to in (II) are washed with fresh hot solvent.
IV. Crystallization is accelerated by Immediately placing the flask of hot solution In an ice-water bath.
V. A large quantity of decolorizing carbon is used.
Select one:
a. l, 11
b. I, IV
clI, IV
d. II, IV
el, ,V

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