Question

YOU ARE PROVIDED WITH THE MIXTURE OF NAPHTHALENE AND AMMONIUM CHLORIDE BY YOUR TEACHER,SUGGEST AN ACTIVITY TO SEPARATE THEM.

Answer 1

Naphthalene is insoluble in water but soluble in benzene (organic solvent). Ammonium chloride is soluble in water but insoluble in benzene. Naphthalene changes into vapours at room temperature whereas ammonium chloride changes into vapours on heating.
Method
(a) Add water to the mixture and shake it vigorously to dissolve ammonium chloride.
(b) Filter the mixture. Naphthalene is obtained as residue whereas, filtrate contains ammonium    chloride. Crystallise the filtrate by heating till saturated solution of ammonium chloride is obtained.

Answer 2

Hola User_______________

Here is Your Answer....!!!!!
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☆Actually welcome to the concept of the Mixtures and the sublimation reaction....

☆Basically if we see here ...both the compounds are the sublimates....
means that ..they under go the change in phase from solid to gas......

☆Thus the compound with less ignition temperature ...will sublimate easily ....and will stick to the flask and can be separated ....

☆Thus here the Sublimation Reaction is useful to separate the sublimates easily ...

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Hope it helps u....☺