enthalpy of sublimation

[Stephanie tran 1J]

Do we need to know the enthalpy of sublimation for the final?

[Tasnia Haider 1E]

I'm pretty sure you need to know all the enthalpies, but they should be on the equations sheet.

[Kyle Alves 3K]

I think the only case it would show up is if we know both the Hvapor and Hsolid, which would make Hsublimation = Hvapor - H solid
and in all cases its endothermic and a positive value!

[Fatima_Iqbal_2E]

The numerical value should be given to us, but it is important to know the relationship between , as stated above!

[Rishi Khettry 1L]

Hsub can also be deltaH(fusion) + deltaH(vaporization)

[Pooja Nair 1C]

As long as you know the equation, delta Hsub = Hvapor - Hsolid, or delta Hsub = delta Hfus + delta Hvap, you should be fine. Just remember that sublimation is changing two states, rather than just one phase transition. Since enthalpy is a state function, you can just add the enthalpy of each phase transition to find the enthalpy of sublimation.