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August 20, 2014

Homework Help: Chemistry(Please help)

Posted by Hannah on Sunday, February 19, 2012 at 4:16pm.

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 did 6.243g aspirin / 180.1g = 0.0346 moles

244.5g / 119.40g = 2.04 moles

Is this correct so far? I do not know how to convert solvent to mole fraction. Thank you!

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