Chapter 12 part 2 – Phase Changes
States of Matter:
Phase Changes:
Liquid-Vapor Equilibrium
Evaporation:
The reverse of evaporation is
A liquid and its vapor will reach
The pressure of the vapor at this point is called
How does this relate to the boiling point?
Molar heat of vaporization:
Relates to intermolecular forces:
Condensation: a gas can be made to condense in one of two ways:
Critical Temperature:
Critical Pressure:
Liquid-Solid Equilibrium
Solid to liquid:
Liquid to solid:
Dynamic equilibrium of ice and water
Molar heat of fusion:
Comparison of molar heat of vaporization with molar heat of fusion:
Solid-Vapor Equilibrium
Solid to vapor:
Vapor to solid:
Molar heat of sublimation:
Heating Curves
How much heat is needed to convert 92 g of ice at -12 C to steam at 110 C?
You need these pieces of information:
Phase Diagrams
Represents the overall relationships between
Boiling Point Elevation / Freezing Point Depression
Homework: 71, 72, 84, 86, 88, 92, 98, 112