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.