Question

what is sublimation

please tell me ​

Answer 1

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The term sublimation is the passage or the transformation or conversion that substances undergo when passing from one state to another, for example from a solid substance to gas.

We can define sublimation as the transition of a substance from the solid phase to the gaseous phase without changing into the liquid phase. This process is an endothermic phase transition that occurs at a temperature and pressure below the triple point of the substance. Desublimation 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 a transition of solid-state to liquid state and liquid state to a gaseous state.

• If solids possess sufficient vapour pressure at a particular temperature than they can directly sublime into the air.

• Solids which have high pressure at their triple point show sublimation.

• The triple point is the point at which the pressure and temperature of the substance are such that it can exist in all three states of matter simultaneously. The triple point is a characteristic point of a substance.

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