## Ideal Gases: Most Ideal

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Posts: 81
Joined: Fri Aug 09, 2019 12:17 am

### Ideal Gases: Most Ideal

Which known gas behaves the most ideally? Why? Is it possible to achieve ideal gas behavior under extreme conditions such as incredible temperatures and pressures?

Eunice Nguyen 4I
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

### Re: Ideal Gases: Most Ideal

Helium would be the closest to the most ideal gas, because it exists as a single atom, which makes the Van der Waals dispersion forces as low as possible.

Sue Bin Park 2I
Posts: 52
Joined: Mon Jun 17, 2019 7:24 am

### Re: Ideal Gases: Most Ideal

gases behave most ideally when they are as inert and non-interacting as possible. this is why @high temperatures and low pressure they behave most ideally; the potential energy of intermolecular forces is lessened. high temp = greater kinetic energy/moving around faster, and low pressure = less collisions and opportunities to experience vdw forces. by this logic, He is the most ideal gas.

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

### Re: Ideal Gases: Most Ideal

To add on, generally the rule is that a gas behaves more like an ideal gas at higher temperature and lower pressure. This is because under these conditions, the gas molecules will have little to no intermolecular forces with each other. So it is possible to achieve ideal gas behavior under extreme conditions: incredibly high temperatures and low pressures.