CONCENTRATION OF SOLUTIONS -L7 Flashcards
homogeneous mixture of two or more substances
SOLUTION
the dissolves substance
SOLUTE
substance in which the solute is dissolved
SOLVENT
the measure of how much of a given substance is mixed with another substance
CONCENTRATION
solutions can be either…
DILUTED OR CONCENTRATED
more amount of solute, less solvent
CONCENTRATED
less solute, more solvent
DILUTE
5 WAYS OF EXPRESSING CONCENTRATION OF A SOLUTION
PERCENT BY MASS
PERCENT BY VOLUME
MOLARITY
MOLALITY
MOLE FRACTION
M
MOLARITY (mol/L)
m
MOLALITY (mol/kg)
defined to be equal to the number of moles of a component divided by the total number of moles
MOLE FRACTION
relationship between the relative quantities of substances taking part in a reaction
STOICHIOMETRY
You need to know…
Both the mole ratio of the unknown substance to the given substance and the molar mass of the unknown substance.