Molarity

To compare the amount of solute (chemical being dissolved) in an amount of solution (chemical doing the dissolving), we will need to use the formula: Moles of solute (mol)/Volume of solution (L)

This formula will give us the molarity or molar concentration of the solution. (M)

Using the formula M= mol/L, we can find:

a) the amount of moles or grams of the solute

b) the molarity of the solution

c) the amount of solution in Litres

Below are example questions that might help you practice:

Find the molarity of a solution with 0.5 moles of sodium chloride dissolved in 0.75 L of water
M = mol/volume
    =0.5/0.75
    = 2/3 M of sodium chloride

Find the amount of solution present if the molarity is 1.2M and there is 3.6 moles of lithium sulphate is present in the solution.
M = mol/volume
volume = mol/M
volume = 3.6/1.2
volume = 3 Litres

For more practice problems~click  here to go to a web with a molarity worksheet
Answers are also included!