STANDARDChemistry-Thermodynamics
STANDARD Chemistry Enthalpy MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Enthalpy of sublimation of a substance is equal to
A
enthalpy of fusion + enthalpy of vaporisation
B
enthalpy of fusion
C
enthalpy of vaporisation
D
twice the enthalpy of vaporisation
Correct Answer
Option A
Detailed Explanation
Enthalpy of sublimation = Enthalpy of fusion + Enthalpy of vaporisation. This process occurs in two steps: Solid → Liquid (fusion) and Liquid → Vapour (vaporisation).
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