Homework Help: Chemistry

Posted by Hannah on Monday, February 13, 2012 at 2:58pm.

The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of aspirin (180.1g/mol) are dissolved in 244.5g of chloroform.

Chloroform=119.40

I do not know how to start this. Thank you for your help!

Chemistry - DrBob222, Monday, February 13, 2012 at 3:05pm
Convert g to moles for both solute and solvent.
Convert moles solvent to mole fraction solvent, Xchlor
Then Pchlor = Xchlo*P^o_CHCl3

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