Photon336
  • Photon336
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
Chemistry
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SOLVED
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katieb
  • katieb
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Photon336
  • Photon336
adding a substance will lower vapor pressure. so I think A. is out immediately
Photon336
  • Photon336
that is to a solution. not sure how to set this one up
anonymous
  • anonymous
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.

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Photon336
  • Photon336
Yeah.. i honestly don't know either
Photon336
  • Photon336
I haven't seen too many questions about Raoults law
JFraser
  • JFraser
the change in vapor pressure will be proportional to the mole fraction of the solute in the solution, if I remember it properly
JFraser
  • JFraser
\[P_{soln} = P^0*X\]
Photon336
  • Photon336
@Woodward \[P ^{0} = pressure of pure substance \]? don't remember
JFraser
  • JFraser
yes, it is
Photon336
  • Photon336
Will look into this more

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