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Photon336

  • one year ago

The vapor pressure of water is about 0.030 arm at 25C what is the vapor pressure of a solution made by adding 5 miles of antifreeze (ethylene glycol) to 1L of water? Arm 0.040 0.028 0.015 0.008

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  1. Photon336
    • one year ago
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    adding a substance will lower vapor pressure. so I think A. is out immediately

  2. Photon336
    • one year ago
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    that is to a solution. not sure how to set this one up

  3. anonymous
    • one year ago
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    It looks like this is exactly what you need: http://chemwiki.ucdavis.edu/Physical_Chemistry/Physical_Properties_of_Matter/Solutions_and_Mixtures/Ideal_Solutions/Changes_In_Vapor_Pressure%2C_Raoult's_Law#Nonvolatile_solutes I haven't seen this sort of thing in a while so I'm trying to catch up to understanding this problem too right now, so let's see if we can use this example to get the same answer for your question.

  4. Photon336
    • one year ago
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    Yeah.. i honestly don't know either

  5. Photon336
    • one year ago
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    I haven't seen too many questions about Raoults law

  6. JFraser
    • one year ago
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    the change in vapor pressure will be proportional to the mole fraction of the solute in the solution, if I remember it properly

  7. JFraser
    • one year ago
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    \[P_{soln} = P^0*X\]

  8. Photon336
    • one year ago
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    @Woodward \[P ^{0} = pressure of pure substance \]? don't remember

  9. JFraser
    • one year ago
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    yes, it is

  10. Photon336
    • one year ago
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    Will look into this more

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