Question

draw a neat labelled diagram of sublimation and explain the process of sublimation

Answer 1

We know that ammonium chloride changes directly from solid to gaseous state on heating. So, in order to separate a mixture containing a sublimable volatile component from a non-sublimable impurity (salt in this case), the sublimation process is used.

Sublimation:It is a process in which matter undergoes a phase transition directly from a solid to gaseous form, or vapor, without passing through the more common liquid phase between the two.

Answer 2

Sublimation

Sublimation can be defined as the transition of a substance from solid phase to gaseous phase without changing into liquid phase. This process is an endothermic phase transition. De sublimation or deposition is the reverse of this process in which a gas is directly converted into solid state.

Elements and compounds mainly possess three different states at various temperatures. The transition from solid state to gaseous state requires transition of solid state to liquid state and liquid state to gaseous state. But some solids can directly convert to their gaseous state. There are various examples of sublimation which are experienced by us in our everyday life.

Best example of sublimation is dry ice which is a frozen form of carbon dioxide.

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