How Does ΔH Change with Temperature for Water to Vapor Conversion?

[Conductivity]

So when they said that to produce water vapor at standard state it releases -241 KJ/mol
and liquid water -284 KJ/mol

You can't create water vapor at standard temperature but I assume they used Hess' law
Anyway, my question is when you change from water to vapor you need 44KJ/mol

So that would be the energy required to change from 25 C liquid to 25 C vapor.
Does it change for example when you want to change it from another temperature?

 

[mjc123]

Yes. Do you know a formula for the variation of ΔH with temperature?