1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Pressure affecting the latent heat of vapourization

  1. Oct 27, 2012 #1
    1. The problem statement, all variables and given/known data
    The definition of latent best of vapourization is the amount of thermal energy required to change the state of a liquid to a gas or vice versa. Also, when we increase the pressure of the gas on the liquid there has to be more work done against the surroundings so the latent heat increases. However when they are in the gaseous state will it require less energy for it to reform into a liquid as the pressure around it is greater?


    2. Relevant equations

    Q=ml

    3. The attempt at a solution
    On one hand it makes sense but the definition states that the energy will be the same due to the vice versa. Or is it the same as the gas has more energy than the same gas with a lower pressure surrounding it so when it gives out the energy, there is an excess of it causing more energy to be given out? But still won't the surrounding pressure cause a difference? I'm confused about the two concepts here and it would be great if you guys could sort it out for me.

    Thanks for the help! :smile:
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Pressure affecting the latent heat of vapourization
Loading...