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.

1. What could X be ?
2. What could Y be ?
3. Name the process Z.
4. Which process would you use to recover both the components X and Y from tincture of iodine ?
5. Which process can be used to recover only component Y from tincture of iodine ?

Answer 1

1. Tincture iodine is a mixture of two materials X and Y. So, X is alcohol.
2. 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.
3. Process Z is called sublimation.
4. Process used to recover both the components, i.e., alcohol and iodine, from the tincture of iodine is distillation.
5. The process used to recover component Y only from the tincture of iodine is evaporation.