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18 Cards in this Set

  • Front
  • Back
What is Molarity (M)?
moles of solute/liters of solution
What is Mass Percent?
(mass of solute/mass of solution)*100
What is Molality(m)
moles of solute/kilograms of solvent
What is Mole Fraction (Xa)
Moles of a/total moles
Polar solvents dissolve _____ and _____ solutes
polar and ionic
nonpolar solvents dissolve ________ solutes
nonpolar
What is Heat of Solution? (∆Hsoln)
heat change associated with the formation of a solution
A ___________ solute lowers the vapor pressure of a solvent
nonvolatile
what does nonvolatile mean?
does not readily vaporize
What is Raoult's law and explain its components.
Psoln = XsolventP0solvent
Psoln: observed vapor pressure of the solution
Xsolvent: Mole fraction of the solvent
P0solvent: vapor pressure of the pure solvent
Changes of state depend on _____ _________
vapor pressure
The addition of a _______ to a solution affects the vapor pressure of it.
solute
The addition of a solute to a solution also affects the _______ ______ and _________ ______
Boiling Point and Freezing Point
What are colligative properties?
Properties that depend on only the number (not the identity) of the solute particles
A ____________ solute elevates the boiling point of the solvent
nonvolatile
A ____________ solute lowers the vapor pressure
nonvolatile
What is the equation for boiling point elevation and explain each part?
∆T = Kb*m(solute)
∆T = Boiling Point Elevation
Kb = molal boiling point elevation constant (characteristic of the solvent)
m(solute) = molality of the solute
What is the equation for Freezing Point Depression and explain each part?
∆T = Kf*m(solute)
∆T = Freezing point depression
Kf = molal freezing point depression constant (characteristic of the solvent)
m(solute) = the molality of the solute