17-liq_props - Ch 16: Liquid & Solid Trends B o ilin g...

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1 Week 7 CHEM 1310 - Sections L and M 1 Boiling Point Melting Point Triple Point Phase Transitions Week 7 CHEM 1310 - Sections L and M 2 Boiling Point Trends Boiling point (T b ) is the temperature at which the internal vapor pressure of a liquid = external pressure Week 7 CHEM 1310 - Sections L and M 3 Substances with strong intermolecular attractions require high temps to make their vapor pressures equal 1 atm. Boiling Point
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2 Week 7 CHEM 1310 - Sections L and M 4 In a group of similar substances with increasing molar mass, bp increases with M. Highest bp Lowest bp Boiling Point Trends Week 7 CHEM 1310 - Sections L and M 5 The melting point is the temperature at which a solid and its liquid are in equilibrium at 1 atm of air. Some materials do not undergo boiling or melting. They exhibit chemical change upon heating before a physical change. Melting Point
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This note was uploaded on 08/23/2011 for the course CHEM 1310 taught by Professor Staff during the Spring '11 term at University of Florida.

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17-liq_props - Ch 16: Liquid & Solid Trends B o ilin g...

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