Chemical Engineering Thermodynamics (MCQs)

The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by ________

  • A. Decrease in enthalpy corresponding to evolution of heat
  • B. Decrease of entropy
  • C. Increase in enthalpy corresponding to absorption of heat
  • D. No change in enthalpy
Answer: Option C.
Explanation: 
During fusion process the heat is absorbed by the solid to convert to liquid leading to increase in enthalpy.

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