Charles' Law Worksheet

Directions: Show given information, formula, plug into formula, cancellation of units and correct answer. Unless specified in the problem, you may leave calculated temperatures in Kelvin.

1. A container has a volume of 2.75 L at 20.^o C. If the volume of the container decreased to 2.46 L, what temperature would be needed to accomplish this, assuming constant pressure?

Answer: 262 K Soln

2. A gas at 65^o C occupies 4.22 L. At what temperature will the volume be 3.87 L if the pressure is kept constant?

Answer: 310 K Soln

3. For each of the following, solve for the missing variable:

a) V₁ = 80.0 mL; T₁ = 27^oC; T₂ = 77^oC; V₂ = ?
Answer: 93.3 mL Soln

b) V₁ = 125 L; V₂ = 85.0 L; T₂ = 127^oC; T₁ = ?
Answer: 588 K Soln

c) T₁ = 33^oC; V₂ = 54.0 mL; T₂ = 160^oC; V₁ = ?
Answser: 38 mL Soln

4. A sample of air has a volume of 140.0 mL at 67^oC. At what temperature will its volume be 50.0 mL at constant pressure?

Answer: 121 K Soln

5. At standard temperature, a gas has a volume of 275 mL. The temperature is then increased to 130^oC, and the pressure is held constant. What is the new volume?

Answer: 406 mL Soln