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Homework Help: Basic thermodynamic in chemistry, temperature of melting ice

  1. Nov 4, 2012 #1
    1. The problem statement, all variables and given/known data
    Consider the heating curve for H2O.
    a. As heat is added to melt ice, does the the temperature change? Explain what happens to the heat that is added.
    b. For the same ammount of H2O, does it take more to melt ice or vaporize water? Explain why.
    c. Is the fusion of ice endothermic or exothermic ?

    2. Relevant equations

    3. The attempt at a solution
    a. Obviously the temperature doesn't rise.but what is happening to the heat that is added?
    are they adding up to have enough energy to change the solid into liquid?

    b.From the graph, it seem like it take more heat to vaporize the water, is it because the process requires the separation of Hydrogen bonds, which take a lot of energy in comparison to just melt the ice, where the bonds are just being loosen up?

    c. It take heat to melt the ice, so it is endorthermic.

    thanks for your time.
  2. jcsd
  3. Nov 4, 2012 #2


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    Gold Member

    Not at all, thank you.
  4. Nov 4, 2012 #3
    I dont get your reply. Are the answers alright or not at all?
  5. Nov 5, 2012 #4


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    Gold Member

    You're all right. We just didn't understood what your problem was?

    He replied to your last line "Thanks for your time".
  6. Nov 5, 2012 #5
    my problem was i didn't know if my answers were right or not =)
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