1. November 22nd, 2011
Practice Problems
Solve the following problems:
1.Calculate the molarity of 1.60L of a solution containing 1.55 g of dissolved KBr.
2.How much calcium hydroxide, in moles, is needed to produce 1.5 L of a 0.25M
solution?
3.How many grams of calcium chloride should be dissolved in 500.0 mL of water
to make a 0.20M solution of calcium chloride?
4.M1V1 = M2V2. You are asked to make a 0.50L solution of calcium chloride with a
molarity of 0.300M. How much volume of a stock solution with a molarity of
2.00M do you need in order to make your solution?
5.What volume of a 3.00MKI stock solution would you use to make a 0.300L of a
1.25M KI solution?
6. What is the molality of a solution containing 10.0 mol of sodium sulfate
dissolved in 1000.0 g of water?
7. What is the molality of a solution containing 20.0 g of hydrochloric acid
dissolved in 200.0 g of water?
8. How much barium hydroxide is needed to make a 1.0m aqueous solution?