Okay, so I'm trying to study for the Olympiad and these two questions appeared:
Which process is exothermic?
The answer to this was A, so I assumed that fusion is an endothermic process.
Then this question comes up:
Rank the enthalpies of fusion, sublimation, an vaporization for water.
B) vaporization < sublimation < fusion
C) fusion < sublimation < vaporization
D) fusion < vaporization < sublimation
The answer to this was D.
This question really bothered me because shouldn't fusion have the HIGHER enthalpy value because it is endothermic? Please help me with this concept.