CHEM 102 Midterm: EXAM I REVIEW
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1 Feb 2017
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Greatest deviation from ideal gas law happens at low temperature and high pressure. (cid:1853)/2=adjusts p for the molecular attraction (pressure is increased) Note: never will see a higher pressure than in ideal gas law (real gases have lower ps) Polar molecules have a higher bp than nonpolar molecules. Larger and polar molecules have more and/or stronger interactions=higher. Attractions between positive and negative ends of neighboring molecules. Polar molecules have more/stronger interactions with partially positive and partially negative attractions. H bonded directly to an extremely electronegative atom (typically o, n or f) and its interaction is with a lone pair of electrons. Dispersion forces < dipole-dipole < hydrogen < ion-dipole. Qualitative term for the tendency of a liquid to vaporize. Quantitative term for the pressure of the vapor above the surface of a liquid f o l s e u c e o m l. Bp is reached when vp=the atmospheric pressure.
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