A) The normal boiling point of methanol is 64.7 degrees C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 450.7 torr at 64.7 degrees C.
What is the mole fraction of methanol in this solution?
B) A solution is made by dissolving 34.8g urea (CH4N2O), a nonelectrolyte, in 275g water.
Calculate the vapore pressure of this solution at 25C and 45C
vapor pressure of water
25C 23.8 torr
45C 71.9 torr