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16 Cards in this Set

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dissociation
separation of ions that occurs when an ionic compound dissolves
net ionic equation
includes only those compounds and ions that undergo a chemical change in a reaction in an aqueous solution
spectator ions
ions that do not take part in a chemical reaction and are found in solution both before and after the reation
ionization
ions are formed from solute molecules by the action of the solvent in this process
hydronium ion
H3O+
strong electrolyte
any compound of which all or almost all of the dissolved coupound exists as ions in an aqueous solution
weak electrolyte
compound of which a relatively small amount of the dissolved compound exists as ions in an aqueous solution
colligative properties
properties that depend on the concentration of solute particles but not on their identity
non-volatile substance
one that has little tendancy to become a gas under existing conditions
molal freezing-point constant (Kf)
the freezing point depression of the solvent in a 1-molal solution of a nonvolatile, nonelectrolyte solute
freezing point depression
the difference between the freezing points of the pure solvent and a solution of a nonelectrolyte in that solvent, and it is directly porportional to the molal concentration of the solution
molal boiling point constant (Kb)
the boiling point elevation of the solvent in a 1-molal solution of a nonvolatile, nonelectrolyte solute.
boiling point elevation
the difference between the boiling points of the pure solvent and a nonelectrolyte solution of that solvent, and it is directly proportional to the molal concentration of the solution
semipermeable membrane
allow the movement of some particles while blocking the movement of others
osmosis
the movement of solvent through a semipermeable membrane from the side of lower solute concentration to the side of higher solute concentration
osmotic pressure
the external pressure that must be applied to stop osmosis