1. Concentration

2. Quick INquiry
In a group, find 3 substances that are used in everyday life (or industry) that use the concentration measurements mol/L, ppm and %vv

3. Why do we need to know this?
Knowing the concentration of a solution tells us how strong it is, and how quickly it will react!

4. Concentration
The amount of a specific substance in a known volume of solution

5. Molar Concentration Number of moles in 1L of solution.
Units are mol/L or M

6. C = n v

7. ExampleS
What is the molarity of pure sulfuric acid, created by combining 12mols of sulfuric acid in 3500mL of water?
What is the molarity of CaCl2 in a solution made by dissolving and diluting 15.0g of CaCl2 into 4.00L of water?
What mass of NaOH is contained in 3.50L of 0.200mol/L NaOH?
What mass of sodium chloride would be required to create a 5.0mol/L solution in a 2.0L volumetric flask?

8. PPM
Parts per million is a measure of mg/L or mg/kg

9. Example
A 200g sample from a bottle of water contains g of mercury. Calculate the concentration of mercury in the sample in parts per million.

10. Percent by Volume
% VV is a measurement of the amount of solvent in total solution.
Just like in a test, the units for %VV are %

11. Example
A hair product requires you to combine 20.0mL of hydrogen peroxide with enough water to produce a solution with a total volume of 120.0mL. Determine the percent by volume concentration of the solution.