Introduction to Dilution Calculations
This worksheet covers fundamental concepts and calculations related to dilutions in chemistry, suitable for Grade 9 science students.
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Introduction to Dilution Calculations
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. What happens to the concentration of a solution when it is diluted?
It increases
It decreases
It stays the same
It depends on the solute
2. Which of the following is the correct formula for dilution calculations?
C1V1 = C2V2
C1V2 = C2V1
C1/V1 = C2/V2
C1 + V1 = C2 + V2
3. Dilution is the process of decreasing the of a solute in a solution.
4. When diluting a solution, the amount of remains constant.
5. You have a 2.0 M stock solution of NaCl. You need to prepare 100 mL of a 0.5 M NaCl solution. How much of the stock solution do you need?
6. Describe, in your own words, why it is important to accurately measure volumes when performing dilutions in a laboratory setting.
7. Observe the image below. If the beaker on the left contains a concentrated solution and the beaker on the right contains the same solution after dilution, what can you infer about the amount of solvent added?
8. Adding more solvent to a solution increases its concentration.
True
False