Why we use enthelpy when we calculate latent heat?

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seungwoo Park
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Why we use enthalpy(h) instead of internal energy(u) when we consider latent heat?
 
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Because a phase change is generally accompanied by a volume change and therefore involves pV work as well.

[edit] I notive you haven't had the customary

Hello seungwoo, :welcome:

So here it is, albeit belated !
 
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