Download Honors Chemistry I Solution Concentration Problem Set #1 1. How

Honors Chemistry I
Solution Concentration Problem Set #1
1. How many grams of NaNO3 must be weighed out to make 50.0 ml of an aqueous solution
+1
containing 70.0 mg Na per ml?
2. Exactly 4.00 grams of a solution of sulfuric acid was diluted with water, and an excess of barium
chloride was added. A precipitate of barium sulfate formed. This precipitate was washed, dried,
and weighed. The weight of the barium sulfate was 4.08 grams. What was the percent by weight
of sulfuric acid in the original acid solution. (A toughie!)
3. How many equivalents of nitric acid are needed to neutralize 45.0 ml of a 5.00 M solution of
barium hydroxide?
4. How many grams of calcium chloride should be added to 300.0 ml of water to make up a
2.46-molal solution?
5. An aqueous solution labeled 35.0% perchloric acid had a density of 1.251 g/ml.
Calculate the following: A) the molar concentration of the acid solution;
B) the molality of the acid solution.
6. 6.00 moles of magnesium oxide are added to water to make 2.50 liters of solution.
What is the normality of the solution?