Grade 12 Chemistry: Concentrations
This worksheet covers key concepts in chemistry concentrations, including molarity, dilution, and solution preparation.
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Grade 12 Chemistry: Concentrations
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Read each question carefully and provide clear, concise answers. Show all your work for calculations.
1. Which of the following is the correct definition of molarity?
Moles of solute per liter of solvent
Grams of solute per liter of solution
Moles of solute per liter of solution
Grams of solute per 100 mL of solution
2. What happens to the molarity of a solution when more solvent is added?
It increases
It decreases
It remains the same
It depends on the solute
3. The process of adding more solvent to a solution to decrease its concentration is called .
4. A solution with a high concentration of solute is described as .
5. A student prepares a solution by dissolving 15.0 g of NaCl (Molar Mass = 58.44 g/mol) in enough water to make 250 mL of solution. Calculate the molarity of the solution. Show your work.
6. Describe the steps you would take to dilute a 2.0 M stock solution of HCl to prepare 100 mL of a 0.50 M HCl solution. Include any necessary calculations.
7. Observe the beaker below. If you were to add more solute to this solution until no more would dissolve, what type of solution would you have?
8. Increasing the temperature generally increases the solubility of gases in liquids.
True
False