Question

Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.

(a) What could X be ?
(b) What could Y be ?
(c) Name the process Z.
(d) Which process would you use to recover both the components X and Y from tincture of iodine ?
(e) Which process can be used to recover only components Y from tincture of iodine ?

Answer 1

(a) Tincture iodine is a mixture of two materials X and Y. So, X is alcohol.
(b) The material Y has a property and its solid form can be converted directly into vapours on heating by the process called Z. So, Y is iodine.
(c) Process Z is called sublimation.
(d) Process used to recover both the components, i.e., alcohol and iodine, from the tincture of iodine is distillation.
(e) The process used to recover component Y only from the tincture of iodine is evaporation.