Solution Concentration
Honors Chemistry
A solution’s ___________________________ is the measure of how much solute is
dissolved in a given amount of solvent.
Solution concentration may be described using the words ________________ or
_____________________________.
Concentration Measurements
Percent by Mass =
Percent by Volume =
Molarity =
Molality =
Mole Fraction =
Problems:
1. What is the percent by volume of isopropyl alcohol in a solution that contains 24 mL
of isopropyl alcohol in 1.1 L of water?
2. What is the molarity of a glucose (C6H12O6) solution containing 12.8 g of glucose in
1.5 liters of an aqueous solution?
3. What is the solution concentration by volume of 100 mL of alcohol dissolved in 500
mL of water?
4. What is the molarity of 500 mL of a solution containing 125 g of MgSO4. ?
Solution Concentration
Honors Chemistry
5. How many grams of water would you have to add to 80 g of CaCO3 to produce an
aqueous solution of concentration 8% CaCO3 by mass?
6. A student adds 3.7 grams of sodium chloride to 150 grams of water. Calculate the
molality of the solution.
7. How many grams of salt would be dissolved in a 1.0 L of a 0.5M solution of NaCl?
8. If the solubility of O2 is 8.3 g/L at one atmosphere, how many g/L will dissolve at 10
atm?
9. How many grams of LiCl are in 750 mL of a 4.0M LiCl solution?
10. What is the solution concentration by mass of 45 grams of NaCl dissolved in 200
grams of water?
11. An aqueous solution contains 22.8% NaOH by mass. What is the mole fraction of
NaOH in the solution?
12. If the solubility of N2 is 2.3 g/L at 3 psi, how much pressure is needed to dissolve 8.0
g/L?
13. How many grams of water must be added to 12 grams of salt to make an 8%
solution concentration?
14. A bottle of hydrogen peroxide is labeled 3%. If you pour out 50 mL, what volume of
hydrogen peroxide have you poured out?
15. How many grams of CCl4 are in 300 mL of a 5M CCl4 solution?
16. What is the molality of a solution containing 10.0 grams of Na2SO4 dissolved in
2500. grams of water?