General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 11 - States of Matter; Liquids and Solids - Exercises - Page 438: 11.2

Answer

Sublimation can be used to purify a solid that can be readily vaporized. Impure iodine is heated in a beaker so that is vaporizes; leaving behind the nonvolatile impurities. The vapor crystallize at the bottom surface of a dish containing ice that rests on top of the beaker. Thus, pure iodine is obtained on the bottom of the dish.

Work Step by Step

Sublimation can be used to purify a solid that can be readily vaporized. Impure iodine is heated in a beaker so that is vaporizes; leaving behind the nonvolatile impurities. The vapor crystallize at the bottom surface of a dish containing ice that rests on top of the beaker. Thus, pure iodine is obtained on the bottom of the dish.
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