SOLUTIONS:
Molarity
Molality
FORMULAS TO MEMORIZE
M = mol of solute
L of solution
M = mol
L
mol of solute
m = mol
kg of solvent
kg
m=
mola
Mole Fraction
mola + molb
Mass %
Mass % =
Volume %
Vol %
Dilution
Solution Preparation
mass of solute
x 100
total mass of solution
vol of solute
x 100
total vol of solution
[c = concentrated & d = dilute]
L of Solution x mol x g = g solute
L
mol
Explanation of how to make a solution once the calculations have been made for
either dilution or solution preparation:
To a __ mL volumetric flask, add some deionized water. Then add __g of the given
chemical (from solution prep) or __ mL of the given chemical with its molarity, (from dilution)
and mix. Add more deionized water to the ground glass line. Stopper and mix again.
The actual name or formula of the chemical is used in the explanation.