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Enthalpy of sublimation of a substance is equal to
(i) enthalpy of fusion + enthalpy of vaporisation
(ii) enthalpy of fusion
(iii) enthalpy of vaporisation
(iv) twice the enthalpy of vaporisation.
Answers (1)
The answer is option (i) enthalpy of fusion + enthalpy of vaporisation
Explanation: In the case of the enthalpy of sublimation, solids convert to liquid and then to gas. In this process, the conversion to liquid requires the enthalpy of fusion, and the conversion to vapour requires the enthalpy of vaporisation.
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