7. Gases

Effusion

Multiple Choice
If the rate of effusion of oxygen (O_2) to an unknown gas is 0.935, what is the molar mass of the unknown gas? (Assume both gases are at the same temperature and pressure.)
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Multiple Choice
Which process is demonstrated when hydrogen gas is purified by passing it through a palladium barrier?
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Multiple Choice
Which of the following gases will have the slowest rate of effusion at constant temperature?
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Multiple Choice
Which of the following is true about diffusion?
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Multiple Choice
Which of the following solutes would diffuse the fastest in water at room temperature?
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Multiple Choice
Which principle explains why the mass of a gas affects its rate of diffusion and effusion?
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Multiple Choice
Which gas will have a faster rate of effusion according to Graham's law?
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Multiple Choice
Under identical conditions, N_2(g) effuses at a rate that is approximately how many times faster than Cl_2(g)?
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Multiple Choice
Which of the following would increase the rate of effusion of a gas?
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Multiple Choice
Given two gases, oxygen (O_2) and hydrogen (H_2), which molecule has the higher molar mass, and which would have the higher rate of effusion?
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Multiple Choice
Which statement best describes the process of effusion?
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Multiple Choice
At a fixed temperature, how many times faster does nitric oxide (NO) effuse compared to nitrogen dioxide (NO_2)?
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Multiple Choice
Which statement best describes effusion?
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Multiple Choice
If H₂has an effusion rate that is 3.72 times faster than a gas, what is the identity of the unknown gas?
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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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