Chemistry I
Molarity Worksheet
Name ______________________________
Hour ________
1. What is the molarity of sodium hypochlorite bleach solution make from 125 g of NaClO
in 2.0 L of solution?
2. What volume in liters of a 2.5 M solution of acetic acid, CH3COOH, is needed to provide
256 g of acetic acid?
3. What mass in grams of copper sulfate pentahydrate, CuSO4 ·5H2O, is needed to make
75.0 ml of a 0.250 M solution?
4. What is the molarity of a solution composed of 2.25 g of HCl in 0.450 L of solution?
5. What volume in liters of a 1.50 M solution of Ba(OH)2 is needed for a reaction that
requires 125.6 g Ba(OH)2?
6. What mass in grams of solid Ca3(PO4)2 results if 750.0 ml of a 6.00 M H3PO4 reacts with
an excess of Ca(OH)2 according to the reaction below?
2H3PO4 (aq) + 3Ca(OH)2 (aq) → Ca3(PO4)2 (s) + 6H2O (l)
7. What volume in liters of a 0.500 M solution of copper (II) sulfate, CuSO4, is needed to
react with an excess of aluminum to provide 11.0 g of copper?
3 CuSO4 (aq) + 2 Al (s) → 3 Cu (s) + Al2(SO4)3
8. 20.0 ml of K2SO4 are used in a double replacement reaction with excess calcium
hydroxide solution. What is the molarity of K2SO4 solution if 2.00 g of dried KOH are
recovered after the reaction has taken place?