Kp given instead of Kc


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005321227
Posts: 90
Joined: Sat Sep 07, 2019 12:15 am

Kp given instead of Kc

Postby 005321227 » Thu Jan 16, 2020 12:16 pm

If Kp is given rather than Kc in a problem but the product is given in moles or grams rather than bars, how do you proceed with the problem? how can you convert to pressure?

Zoe Gleason 4F
Posts: 51
Joined: Tue Jul 23, 2019 12:15 am

Re: Kp given instead of Kc

Postby Zoe Gleason 4F » Thu Jan 16, 2020 12:19 pm

You can convert to pressure by using the ideal gas equation (PV=nRT).

Alice Ma 2K
Posts: 52
Joined: Wed Nov 13, 2019 12:26 am

Re: Kp given instead of Kc

Postby Alice Ma 2K » Thu Jan 16, 2020 12:19 pm

Given moles or grams, use the Ideal Gas law (PV=nRT) to pressure. Once converted, you can calculate using Kp.

WYacob_2C
Posts: 102
Joined: Sat Jul 20, 2019 12:16 am

Re: Kp given instead of Kc

Postby WYacob_2C » Thu Jan 16, 2020 10:48 pm

If you are given moles or grams, you can first convert into molarity, and from there you can use the equation, P=(n/v)RT to find the partial pressure of each gas in the reaction. Then, these numbers can be used to calculate Kp.

Sukanya Mohapatra 2G
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Joined: Sat Aug 17, 2019 12:18 am
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Re: Kp given instead of Kc

Postby Sukanya Mohapatra 2G » Sat Jan 18, 2020 2:51 pm

After converting units, use the ideal gas law.

Megan Cao 1I
Posts: 103
Joined: Sat Sep 07, 2019 12:18 am

Re: Kp given instead of Kc

Postby Megan Cao 1I » Sat Jan 18, 2020 3:09 pm

in order to convert pressure into moles, you would use the ideal gas law (PV=nRT)

Michellekim1H
Posts: 25
Joined: Wed Feb 20, 2019 12:17 am

Re: Kp given instead of Kc

Postby Michellekim1H » Sat Jan 18, 2020 6:44 pm

First, if given grams, then convert it to moles. Afterwards, input what you have as moles in the ideal gas law equation but rearrange it to get P alone.

Jesse H 2L
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Re: Kp given instead of Kc

Postby Jesse H 2L » Sun Jan 19, 2020 9:16 pm

Use PV=nRT

Anna Chen 1K
Posts: 104
Joined: Thu Jul 25, 2019 12:18 am

Re: Kp given instead of Kc

Postby Anna Chen 1K » Sun Jan 19, 2020 9:54 pm

Use PV=nRT to convert moles to pressure. Moles is represented by n and pressure is represented by P.


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