CHEM 24112 Chapter Notes - Chapter 15: Potassium Bromide, Volumetric Flask, Sodium Hydroxide

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Homework 15.3: Molarity
1. A solution you used in a lab experiment was labeled “3 M HCl.” Describe in words the composition
of this solution.
2. A solution labeled “0.110 M CaCl2” would contain _______________ mol Ca2+ and ______________
mol Cl- in each liter of the solution.
_____ 3. To prepare 500. mL of 1.02 M sugar solution, which of the following would you need?
a. 500. mL of water and 1.02 mol of sugar
b. 1.02 mol of sugar and enough water to make the total volume 500. mL
c. 500. g of water and 1.02 mol of sugar
d. 0.51 mol of sugar and enough water to make the total volume 500. mL
4. For each of the following solutions, the mass of solute is given, followed by the total volume of
solution prepared. Calculate the molarity.
a. 1.37 g of NaOH; 125 mL
b. 4.29 g of KI; 250. mL
c. 2.95 mg of Pb(NO3)2; 4.95 mL
d. 0.997 kg of NaNO3; 125 L
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