Chemistry

Benzene has a vapor pressure of 100.0 Torr at 26°C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26°C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules were added to the benzene?

asked by Angelica
  1. Isn't delta P = XsolutePosolvent

    posted by DrBob222
  2. That is what I tried using...I solved for m for when P= 100 Torr, then used that to set up an equation when P=60 Torr to find the difference, but my answer is consistently incorrect. I am setting up the algebra incorrectly but am not sure what I am missing

    posted by Angelica
  3. This is not a molality problem. I think I've taken care of this problem further up the board.

    posted by DrBob222

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