SEPARATION OF COMMON SALT AND IODINE

A mixture of solid common salt and Iodine is placed in a boiling tube. The boiling tube is heated gently. Solid Iodine forms a purple vapour which condenses on the funnel to sublimate of Iodine leaving salt on the evaporating dish.The process is used in the purification of Iodine. During the experiment, glass funnel was used instead of plastic funnel because the plastic cannot withstand high temperature.