1. Limited time only! Sign up for a free 30min personal 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!

Latent heat problem HELP!

  1. Apr 15, 2010 #1
    1. The problem statement, all variables and given/known data
    The latent heat of vaporization for water is 540 kcal/kg. By how much does the entropy of 50g of water at 100oC change if the water is very slowly converted into steam at 100oC?

    2. Relevant equations

    3. The attempt at a solution
    would it be 0 heat change plus the 540? = 540 total?
  2. jcsd
  3. Apr 15, 2010 #2
    No, it's not zero heat change. Certainly some heat enters the water to make it steam. How would you use the latent heat of vaporization to find out how much?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Latent heat problem HELP!
  1. Latent heat problem (Replies: 1)