Relationship between pressure and volume

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Shanzey
Posts: 120
Joined: Wed Sep 18, 2019 12:20 am

Relationship between pressure and volume

Postby Shanzey » Sun Jan 19, 2020 8:44 pm

Are pressure and volume inversely related to each other? If the pressure of a system doubled, would the volume halve?

205007651
Posts: 53
Joined: Tue Nov 13, 2018 12:17 am

Re: Relationship between pressure and volume

Postby 205007651 » Sun Jan 19, 2020 8:46 pm

You can look at PV=NRT to know the answer to this. If you keep temperature and moles constant and double pressure, then the volume has to halve. It gets trickier if you change more than one variable.

AniP_2D
Posts: 95
Joined: Sat Aug 17, 2019 12:17 am

Re: Relationship between pressure and volume

Postby AniP_2D » Sun Jan 19, 2020 8:59 pm

According to the ideal gas law, PV=nRT, pressure and volume are inversely proportional.

Samuel Tzeng 1B
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

Re: Relationship between pressure and volume

Postby Samuel Tzeng 1B » Sun Jan 19, 2020 9:05 pm

Yes they're inversely proportional

Jesse H 2L
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Been upvoted: 1 time

Re: Relationship between pressure and volume

Postby Jesse H 2L » Sun Jan 19, 2020 9:09 pm

inversely proportional, and an increase in volume in a system is only recognized if it is the result of change in volume, which is usually assumed unless the problem involves pumping an inert gas into a system

Noe BM 1J
Posts: 50
Joined: Sat Sep 07, 2019 12:17 am

Re: Relationship between pressure and volume

Postby Noe BM 1J » Sun Jan 19, 2020 9:12 pm

Yes, they are. When you decrease a volume molecules have less space to move around, so they collide more--increasing the pressure. When you increase the volume molecules have more space and therefore, collide less--decreasing the pressure.

Anna Chen 1K
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Joined: Thu Jul 25, 2019 12:18 am

Re: Relationship between pressure and volume

Postby Anna Chen 1K » Sun Jan 19, 2020 9:49 pm

I agree that PV=nRT proves that pressure and volume have an inverse relationship.

205154661_Dis2J
Posts: 109
Joined: Wed Sep 18, 2019 12:21 am

Re: Relationship between pressure and volume

Postby 205154661_Dis2J » Sun Jan 19, 2020 11:30 pm

As formerly mentioned, pressure and volume are inversely proportional. When volume decreases, pressure increases. When volume increases, pressure decreases.

Jainam Shah 4I
Posts: 130
Joined: Fri Aug 30, 2019 12:16 am

Re: Relationship between pressure and volume

Postby Jainam Shah 4I » Sun Jan 19, 2020 11:42 pm

They are inversely related. When volume decreases the number of moles remain the same, but the frequency of the collisions increase. The particles collide more often and this increases the pressure. When volume increases the particles have more space. They collide less and the pressure decreases.

Ian Morris 3C
Posts: 101
Joined: Wed Sep 18, 2019 12:18 am

Re: Relationship between pressure and volume

Postby Ian Morris 3C » Mon Jan 20, 2020 3:39 am

They are inversely proportional.

kristi le 2F
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: Relationship between pressure and volume

Postby kristi le 2F » Mon Jan 20, 2020 5:47 pm

Pressure and volume are inversely proportional because conceptually, the smaller the volume/space, the less room the gases have and therefore the higher the pressure.


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