
As temperature increases, solubility ______ for solids but _______ for gas.
Increases, decreases

A colligative property is a physical property that is dependent on ________ ?
The # of solute particles but not their identity

As # of particles increases, vapor pressure ______.
Reduces

As # of particles increases, freezing point _______.
Decreases

As # of particles increases, boiling point ______.
Increases

Vapor Pressure ________
Reduction

Boiling Point _______
Elevation

Freezing Point _______
Depression

What is the van't Hoff factor?
i = the # of particles the substance breaks into

As # of particles increase, osmosis pressure _______.
Increases

How many particles does 2m NaCl have?
 4
 NaCl > Na + Cl
 2 particles X 2m = 4

How many particles does 2m CH3COOH have?
 Weak electrolyte so partially dissociates into ions.
 1 < i < 2
 24 particles

All nonelectrolytes have what van't Hoff factor?
i = 1

In an equation, use the van't Hoff factor for the ______ & the constant for the ________.
Solute, Solvent

In an equation, when do u worry about the van't Hoff factor?
When the solute is a strong or weak electrolyte

How do u find the change in temperature of boiling point?
Constant of solvent X van't Hoff factor (if necessary) X molality

After finding the change of boiling temp, how do u find the temperature of the solution?
 Take ur change in temp & add it to the boiling of solvent (in celsius)
 E.G. Change in temp is .34 so add that to 100 (water's boiling point) = 100.34 C

How do u find the temperature change in freezing point?
Constant of freezing solvent X van't Hoff factor (if necessary) X molality

After finding the change in freezing temp, how do u find the freezing point for the solution?
 Subtract the change in freezing temp from the freezing point of the solvent.
 E.G. Change in temp is 1.23 so subtract that from 0 (water's freezing point) =
 1.23 C

What is Raoult's Law? (Vapor Pressure)
 Pa = Xa (Pure a)
 Solution's vapor pressure = mole fraction X pure solvent's vapor pressure

