P1/P2

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Rita Chen 1B
Posts: 112
Joined: Sat Jul 20, 2019 12:15 am

P1/P2

Postby Rita Chen 1B » Wed Feb 12, 2020 9:11 am

Why is it P1/P2 for delta S and V2/V1?

Verity Lai 2K
Posts: 100
Joined: Sat Aug 24, 2019 12:18 am

Re: P1/P2

Postby Verity Lai 2K » Wed Feb 12, 2020 11:01 am

Volume and pressure are related inversely, so V=1/P. So when you use the delta S equation, you can replace V with the inverse of P, which results in nRln(P1/P2).

Katie Kyan 2K
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Re: P1/P2

Postby Katie Kyan 2K » Wed Feb 12, 2020 2:07 pm

Using the Ideal Gas Law we know that PV=nRT where P and V have an inverse relationship. This is why we can use P1/P2 in place of V2/V1.

Minh Ngo 4G
Posts: 137
Joined: Thu Jul 25, 2019 12:17 am

Re: P1/P2

Postby Minh Ngo 4G » Wed Feb 12, 2020 2:47 pm

Because P and V has an inverse relationship. If you increases one, one wil decreases (PV=nRT)

Robin Cadd 1D
Posts: 113
Joined: Thu Jul 11, 2019 12:16 am

Re: P1/P2

Postby Robin Cadd 1D » Thu Feb 13, 2020 12:51 pm

Katie Kyan 2K wrote:Using the Ideal Gas Law we know that PV=nRT where P and V have an inverse relationship. This is why we can use P1/P2 in place of V2/V1.

This is called Boyle's Law.

Anthony Hatashita 4H
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

Re: P1/P2

Postby Anthony Hatashita 4H » Sat Feb 15, 2020 3:06 am

Pressure and volume always have an inverse relationship, so it's P1/P2 instead of vice versa.

Jacob Motawakel
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Re: P1/P2

Postby Jacob Motawakel » Sat Feb 15, 2020 3:41 pm

Boyle's Law proves that volume and pressure are inversely related.

Nuoya Jiang
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

Re: P1/P2

Postby Nuoya Jiang » Sat Feb 15, 2020 3:56 pm

Because in the ideal gas law, P and V are inversely proportionate to each other.

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

Re: P1/P2

Postby HuyHa_2H » Sat Feb 15, 2020 5:25 pm

Pressure and volume are inversely proportional to each other therefore depending on what you're given, the ratio will always be V2/V1 or P1/P2.

Mandeep Garcha 2H
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Re: P1/P2

Postby Mandeep Garcha 2H » Sat Feb 15, 2020 10:11 pm

Pressure and volume are inversely related (when volume increases, pressure decreases, and vice versa). Therefore, it is P1/P2 and V2/V1.

Esha Chawla 2E
Posts: 108
Joined: Thu Jul 25, 2019 12:17 am

Re: P1/P2

Postby Esha Chawla 2E » Sat Feb 15, 2020 10:21 pm

Rita Chen 1B wrote:Why is it P1/P2 for delta S and V2/V1?


According to Boyle's law, pressure and volume are inversely related. As such, if one variable increases, the other variable decreases. Since these two variables are in an inverse relationship, their ratios must also be inverses of each other. Thus, for delta S, it is V2/V1 and P1/P2.


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