If a single balloon is filled with equal volumes of hydrogen, helium, nitrogen, and neon, which gas will be deleted first?
Correct answer: B. Hydrogen
- A. Helium
- B. Hydrogen
- C. Nitrogen
- D. Neon
Explanation
This concept is related to the process of effusion.Effusion is the process in which a gas escapes from a container through a hole of a diameter considerably smaller than the mean free path of the molecules. Now obviously the gas having the smallest size will effuse at a greater rate, even through small pores.Of the given options, Hydrogen has the smallest size.You might be thinking that helium is smaller than hydrogen because size decreases across the group.But helium is a noble gas and noble gasses have greater size.
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About Kinetic Molecular Theory
Kinetic molecular theory explains gases as rapidly moving particles separated by large distances, with negligible volume and negligible intermolecular attraction in the ideal model. It relates temperature to average kinetic energy and explains gas pressure, Boyle's and Charles's laws, diffusion, effusion and the conditions under which real gases deviate from ideal behavior.
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