Graham's Law of Effusion Worksheet
A Grade 12 Chemistry worksheet covering Graham's Law of Effusion, including calculations and conceptual understanding.
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Graham's Law of Effusion Worksheet
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Read each question carefully and provide detailed answers. Show all your work for calculation problems. You may use a calculator.
1. Graham's Law of Effusion states that the rate of effusion of a gas is:
Directly proportional to its molar mass.
Inversely proportional to its molar mass.
Directly proportional to the square root of its molar mass.
Inversely proportional to the square root of its molar mass.
2. Which of the following gases would effuse the fastest?
O₂ (Oxygen)
N₂ (Nitrogen)
He (Helium)
CO₂ (Carbon Dioxide)
3. The process by which gas particles escape through a tiny hole into a vacuum is called .
4. Graham's Law is mathematically expressed as Rate₁/Rate₂ = √ (M₂/M₁), where M represents the of the gas.
5. Explain the relationship between the kinetic energy of gas molecules and their rate of effusion.
6. If methane (CH₄) effuses at a rate of 1.5 mol/s, what is the effusion rate of sulfur dioxide (SO₂) under the same conditions?
7. A sample of an unknown gas effuses through a tiny hole in 45 seconds. An equal volume of oxygen gas (O₂) effuses through the same hole in 30 seconds. Calculate the molar mass of the unknown gas.
8. Heavier gas molecules effuse faster than lighter gas molecules at the same temperature.
True
False
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