The vapor pressure of water at 25.0 degrees Celsius is 23.8 torr. Determine the mass of glucose (molar mass=180 g/mol) needed to add to 500.0g of water to change the vapor pressure to 22.8 torr.

asked by @kevint52 • about 1 year ago • Chemistry • 5 pts
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Hey there! You'll have to use Raoult's Law to solve this problem. You first need to get the mole fraction of the solvent (H2O) then from that, you can get the amount of solute (glucose) that you need. The solution is posted below. I hope this helps!

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answered by @leot1 • about 1 year ago