7. Gases

Effusion

Multiple Choice
How many times faster will H₂ gas pass through a pinhole into an area of vacuum than O₂ gas?
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Multiple Choice
It takes 6.3 minutes for 2.3 L argon to effuse through a semipermeable membrane. How long would it take for 2.3 L of chlorine gas to effuse under similar conditions?
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Multiple Choice
Determine the identity of an unknown gas that effuses at a rate 1.48 times as fast as chlorine gas.
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Open Question
The rate of effusion of oxygen to an unknown gas is 0.935. What is the other gas?
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Open Question
Calculate the ratio of effusion rates for Ar and Kr.
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Open Question
What is the ratio of effusion for F₂ gas to Cl₂ gas?
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Open Question
Which molecule has the higher molar mass? which molecule would have the higher rate of effusion?
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Open Question
How much faster do ammonia ( NH₃ ) molecules effuse than carbon monoxide ( CO ) molecules?
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Open Question
The process of intermingling of the ions (molecules) of one substance into another is called:
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Multiple Choice
A sample of N2O diffuses at a rate of 82.5 mL/s in a diffusion apparatus. What will be the rate of diffusion in mL/s for Br2 in the same apparatus, assuming ideal gas behavior?
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Multiple Choice
A sample of N₂O diffuses at a rate of 82.5 mL/s in a diffusion apparatus. Using Graham's law of effusion, what will be the rate of diffusion in mL/s of Br₂ in the same apparatus?
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Multiple Choice
A sample of bromine gas requires 84.5 s to effuse from a container. Under identical conditions, how long (in seconds) will it take a sample of neon gas to effuse?
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Multiple Choice
What is the ratio of the effusion rates of hydrogen gas (H2) to krypton gas (Kr) according to Graham's law of effusion?
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Multiple Choice
If NO and NH3 are allowed to effuse through a porous membrane under identical conditions, the rate of effusion for NH3 will be ________ times that of NO.
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Multiple Choice
If NO₂ and NH₃ are allowed to effuse through a porous membrane under identical conditions, the rate of effusion for NH₃ will be how many times that of NO₂?
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