Is the air in a room an ideal gas?

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    Air Gas Ideal gas
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Discussion Overview

The discussion centers around whether the air in a room can be considered an ideal gas, exploring the conditions under which this might be true and how it relates to the density of air at room temperature.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions if the air in a room is an ideal gas and seeks clarification on how this can be determined.
  • Another participant suggests that air at room temperature is close to behaving as an ideal gas due to its temperature being significantly higher than its boiling point.
  • A further contribution argues that air can be considered an ideal gas because intermolecular forces, such as hydrogen bonding and dipole-dipole interactions, have minimal impact at typical room conditions of temperature, pressure, and volume.
  • This participant also discusses the relationship between density and the distance between molecules, indicating that while density is proportional to volume, it is the molecular spacing that is more critical in determining ideal gas behavior.

Areas of Agreement / Disagreement

Participants express varying views on the ideal gas behavior of air, with some suggesting it is close to ideal under certain conditions, while others elaborate on the factors influencing this classification. No consensus is reached regarding the definitive status of air as an ideal gas.

Contextual Notes

The discussion does not resolve the assumptions regarding the ideal gas law applicability and the specific conditions under which air may or may not behave as an ideal gas.

bse
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Is the air in a room an ideal gas? How do you know this?

How does this compare to the density of air at room temperature?

thanks
 
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this can probably go into the General Physics or Classical Physics forum.

air at room temp is pretty close to an ideal gas because its temp is much higher than its boiling point.
 
Ok sorry,

thanks a lot
 
it is an ideal gas because the weird forces of attraction and repulsion (Such as hydrogen bonding, diploe-dipole stuff) have very little effect at this temperature, pressure and volume. This is true because the molecules in this gas have enough distance in b/w them at this P,V,T.

Density doesn't really directly have anything to do with this. rho = m/V = (n*MM)/V, the only variable here is V, so density is proportional to the volume, but it as i mentioned above it is the distance b/w the molules that matters, and this of course is related to the density, so that's how the density factors in.


Hope that helps
 

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