Concentration of Solutions Worksheet
This worksheet covers the fundamental concepts and calculations related to the concentration of solutions for Grade 12 Chemistry students.
Includes
Standards
Concentration of Solutions
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following units is commonly used to express the concentration of a solution?
Grams per liter (g/L)
Moles per liter (mol/L)
Parts per million (ppm)
All of the above
2. What is the molarity of a solution that contains 0.5 moles of solute in 2.0 liters of solution?
0.25 M
1.0 M
2.5 M
4.0 M
3. A solution contains the maximum amount of solute that can be dissolved at a given temperature.
4. The substance that is dissolved in a solvent to form a solution is called the .
5. Describe the process of preparing a 0.1 M solution of sodium chloride (NaCl) in a 250 mL volumetric flask. Assume the molar mass of NaCl is 58.44 g/mol.
6. Increasing the temperature generally decreases the solubility of solid solutes in liquid solvents.
True
False
7. Molality is defined as moles of solute per liter of solution.
True
False
Match each term on the left with its definition on the right.
8. Molarity
a. Moles of solute per kg of solvent
9. Molality
b. Mass of solute per mass of solution x 100%
10. Mass Percent
c. Moles of solute per liter of solution
11. A solution is prepared by dissolving 25.0 g of glucose (C₆H₁₂O₆) in 200.0 g of water. Calculate the mass percent of glucose in the solution. (Molar mass of C₆H₁₂O₆ = 180.16 g/mol)