Equilibrium Ch 17

Be able to Define, Explain, and Give Examples of the Following:

Equilibrium

Principle of le Chatelier

Conditions of Equilibrium:

. Dynamic microscopic action

. Constant macroscopic props

Shifting the Equilibrium by

. Pressure

. Temperature

. Concentration

Methods to stress equilibria:

. Increase heat.

. Increase pressure.

. Increase conc. reactants

The Warming Curve of Water

H2O(s)+80 cal/g <-->H2O(l)

H2O(l)+538 cal/g <--> H2O(g)

Regelation

Sublimation

Examples:

. Freezer frost (vapor to solid)

. Iodine (I2) (solid to gas)

. Moth Crystals (solid to gas)

. Snow (vapor to solid)

. Cirrus clouds (vapor to solid)

. Dry ice (CO2) (solid to gas)

Refrigeration--

... Cool by evaporation

Capacity of air

Absolute Humidity

Relative Humidity

Advection Fog

Radiation Fog

Upslope Fog

Adiabatic Cooling

Energy of Water Joules of energy

. warm ice 2.06 J/gCo

. melt ice 334 J/g

. warm water 4.18 J/gCo

. evaporate water 2290 J/g

. warm vapor 20.2 J/gCo

Vapor pressure

Boiling Point

Evaporation

. volume increases 1500 times!

Boiling without heating

Cooling by boiling

Boiling by cooling

Freezing by boiling

The Great Suckback!