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.

Question

Chloroform=119.40

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

Answer 1

Convert g to moles for both solute and solvent.
Convert moles solvent to mole fraction solvent, Xchlor
Then Pchlor = Xchlo*P^o_CHCl3