sublimation???

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Payton Kammerer 2B
Posts: 49
Joined: Tue May 01, 2018 3:00 am

sublimation???

Postby Payton Kammerer 2B » Sat Jan 25, 2020 11:58 pm

can the delta h of sublimation be calculated by adding the delta h of melting with the delta h of vaporization? Or does it take a totally separate path? But because delta H is a state function, shouldn't it be the case that sublimation's enthalpy change is the same as the enthalpy change of melting and then vaporizing something? If this is the case, why consider sublimation as it's own thing at all?

Altamash Mahsud 1I
Posts: 50
Joined: Fri Aug 09, 2019 12:16 am

Re: sublimation???

Postby Altamash Mahsud 1I » Sun Jan 26, 2020 12:05 am

Yes, the enthalpy of sublimation can be calculated by adding up the enthalpy of fusion (melting) and the enthalpy of vaporization. This is because enthalpy is a state function, so it can be added up like this, since sublimation is going from a solid directly to a gas, you can just add the enthalpies of the 2 phase changes, from solid to liquid, and from liquid to gas.


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