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A student is given a mixture of naphthalene ball’s powder and common salt. He needs to separate this mixture. How will he do this?
The technique of extracting naphthalene from common salt is known as sublimation. Sublimation is the process of converting a solid into vapours without going through the liquid state
Naphthalene is a sublimate which on heating changes to gaseous state directly. Hence to separate a volatile compound (sublimate) from a non-volatile compound (non-sublimate), the sublimation process is used.
In a China dish, the mixture is kept and is placed on a stand. An inverted funnel is kept over the mixture in a China dish with the plugged stem. The sublimate on heating gets collected on the funnel and common salt remains in the China dish.
Updated on: 14-Mar-2023
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