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Unformatted text preview: 3 CH 2 OH 6. Using your knowledge of IM Forces, consider pure water and pure water with NaBr dissolved in it. Which would you expect to have a higher vapor pressure? Which would you expect to have a higher boiling point? Pure water would have a higher vapor pressure. By dissolving NaBr in water, you are making the strongest IM force to be ion-dipole, instead of the H-bond. Since strong IM forces have low vapor pressure, water with NaBr has a lower vapor pressure than pure water. Strong IM forces relate to higher boiling points, so that water with NaBr will have the higher boiling point....
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- Fall '08