Dilutions in Chemistry
This worksheet covers fundamental concepts and calculations related to dilutions in chemistry, including serial dilutions and practical applications.
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Dilutions in Chemistry
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Read each question carefully and provide clear, concise answers. Show all your work for calculation problems.
1. Which of the following equations is used to calculate the concentration of a diluted solution?
C1V1 = C2V2
C1/V1 = C2/V2
C1+V1 = C2+V2
C1-V1 = C2-V2
2. When performing a dilution, the number of moles of solute remains before and after the dilution.
3. A serial dilution involves diluting a solution in a of steps.
4. Describe the primary purpose of dilution in a laboratory setting.
5. You have a 2.5 M stock solution of HCl. How much of this stock solution do you need to prepare 500 mL of a 0.5 M HCl solution?
6. Adding more solvent to a solution increases its concentration.
True
False
7. A student performs a serial dilution by taking 1 mL of a 1.0 M stock solution and diluting it to 10 mL. They then take 1 mL of this new solution and dilute it again to 10 mL. What is the final concentration of the solution after these two dilutions?
8. Identify the glassware commonly used for precise volume measurements when preparing diluted solutions:
