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Homework Help: Help !~

  1. May 13, 2005 #1
    it is the experiment that i did in school!~
    topic:boiling point with composition for different mixtures of two miscibe liquids


    first: mixing trichloromethane and ethyl ethanoate
    so the following is the result~
    Volume of trichloromethane/cm3
    10 10 10 10 5 2 0
    Volume of ethyl ethanoate/cm3
    0 2 5 10 10 10 10
    Volume % of ethyl ethanoate
    Boiling point/0C
    60 65 70 68 67 66 63








    by plotting boiling point against volume %of ethyl ethanoate . we can see the curve rise but after drop , so why this happen !~???????????/
    can any one explain in detail ?????????????????
    help me please!~
    the boiling point of mixing hexane and propanone just opposite .
    it's curve drop but rise slightly .
    why ????????
    Volume of trichloromethane/cm3
    10 10 10 10 5 2 0
    Volume of ethyl ethanoate/cm3
    0 2 5 10 10 10 10
    Volume % of ethyl ethanoate
    Boiling point/0C
    67 52 49 54 52 57 59
     
  2. jcsd
  3. May 13, 2005 #2

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    I answered this back at the chemistry forum, it has to do with characteristics of ideal, non-ideal, etc...solutions and boiling point elevation.
     
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