Q. 13

Enthalpy of sublimation of a substance is equal to
A. enthalpy of fusion + enthalpy of vapourisation

B. enthalpy of fusion

C. enthalpy of vapourisation

D. twice the enthalpy of vapourisation

Answer :

Reason: Sublimation is the process of conversion of solid into vapor.

Solid now can be also first converted into the liquid which require enthalpy of fusion and then it will be converted into vapor which require enthalpy of vapourization.

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