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Homework Help: Work done to melt ice then vaporize it

  1. Sep 26, 2012 #1
    1. The problem statement, all variables and given/known data

    When a lab associate melts 10.9 g of ice at 0 °C, then heats the liquid to its boiling point and then vaporizes it against 1.0 atm of pressure, find the work done in kJ.

    2. Relevant equations

    work = -Pext(deltaV)

    3. The attempt at a solution

    I found that delta H = 32.836 kJ, but delta h does not equal work. I know that the work, should be the expansion of water from liquid to gas
    against 1 atm of pressure then i need to convert that value in L-atm to Joules.

    I just am not sure how to go about getting the change in volume since it is not an ideal gas situation. Or is it?
    Last edited: Sep 26, 2012
  2. jcsd
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