P=(n/v)RT


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Andrea_Torres
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P=(n/v)RT

Postby Andrea_Torres » Sun Jan 12, 2020 4:41 pm

I see that there is the equation P= (n/v)RT which is connected to PV=nRT but why is it that V (volume) is not divided by the whole nRT? Since its only dividing by n (number of moles).

Abigail Menchaca_1H
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Re: P=(n/v)RT

Postby Abigail Menchaca_1H » Sun Jan 12, 2020 5:03 pm

I think it just means concentration multiplied by the constant and temperature

Althea Zhao 1B
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Joined: Mon Jun 17, 2019 7:24 am

Re: P=(n/v)RT

Postby Althea Zhao 1B » Sun Jan 12, 2020 5:12 pm

n/V is the same as (nRT)/V!

405268063
Posts: 102
Joined: Thu Jul 25, 2019 12:17 am

Re: P=(n/v)RT

Postby 405268063 » Sun Jan 12, 2020 6:04 pm

n/V is also a way of writing molarity since its units are mols/L. This is nice for understanding how you can use the ideal gas equation to determine Kc as well I believe.

Kennedi2J
Posts: 101
Joined: Wed Sep 18, 2019 12:20 am

Re: P=(n/v)RT

Postby Kennedi2J » Sun Jan 12, 2020 6:20 pm

You can get the same answer either way you write it but using P=(n/V)RT makes it easier when you need to convert between the concentration and partial pressure of a compound.

Alondra
Posts: 36
Joined: Tue Feb 26, 2019 12:15 am

Re: P=(n/v)RT

Postby Alondra » Sun Jan 12, 2020 6:25 pm

I believe this depends on your given values and what you are trying to find.The equation is rearranged to find Kc. (P=nRT/V = n/V x RT = conc x RT)

Jasmine 2C
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Re: P=(n/v)RT

Postby Jasmine 2C » Sun Jan 12, 2020 6:41 pm

V is also divided by PRT :) it's just typed (n/V)RT for it be easily seen as concentration * RT. (nRT)/V means the same thing

AveryAgosto
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Re: P=(n/v)RT

Postby AveryAgosto » Sun Jan 12, 2020 6:53 pm

n/V is how concentration is calculated and the derived equation includes concentration. I believe it is written that way to show that it means concentration.

Ruby Richter 2L
Posts: 103
Joined: Thu Jul 25, 2019 12:17 am

Re: P=(n/v)RT

Postby Ruby Richter 2L » Sun Jan 12, 2020 9:06 pm

So basically you're just multiplying the molarity times RT which gives you P?

Nicholas Chin 1G
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Re: P=(n/v)RT

Postby Nicholas Chin 1G » Sun Jan 12, 2020 9:08 pm

Ruby Richter 2L wrote:So basically you're just multiplying the molarity times RT which gives you P?


Yea that's all you're doing.

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

Re: P=(n/v)RT

Postby Samuel Tzeng 1B » Sun Jan 12, 2020 9:18 pm

Writing (n/V)RT is the same as nRT/V

Jacob Villar 2C
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Joined: Sat Aug 17, 2019 12:18 am

Re: P=(n/v)RT

Postby Jacob Villar 2C » Sun Jan 12, 2020 9:35 pm

You can use this equation to calculate for concentration, given that concentration is calculated by dividing moles by volume (n/v).

Michelle N - 2C
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Re: P=(n/v)RT

Postby Michelle N - 2C » Mon Jan 13, 2020 9:57 am

You can write it as V is being divided by the whole thing (P = nRT/v). I think why Dr. Lavelle has been writing the V specifically under the n was just emphasize that n/v is molarity, and therefore the concentration.


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