Kp?


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Christine Nguyen 3D
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Kp?

Postby Christine Nguyen 3D » Sun Jan 17, 2021 8:50 pm

I understand that you solve for Kp the same way you would solve for Kc, but does partial pressure only apply to gases?

Minahil_Tufail_3I
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Re: Kp?

Postby Minahil_Tufail_3I » Sun Jan 17, 2021 8:54 pm

Yes, I believe partial pressure only applies to gases!

Biona Hui 1G
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Re: Kp?

Postby Biona Hui 1G » Sun Jan 17, 2021 8:56 pm

Yep, partial pressure, based on what we've learned, only applies to gases.

605291562
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Re: Kp?

Postby 605291562 » Sun Jan 17, 2021 9:03 pm

Yeah, I believe he said in lecture for the purpose of this class we only need to think of partial pressure applied to gasses

Nathan Tong 3G
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Re: Kp?

Postby Nathan Tong 3G » Sun Jan 17, 2021 9:03 pm

Partial pressure is not typically used for the other phases.
Last edited by Nathan Tong 3G on Sun Jan 17, 2021 9:24 pm, edited 1 time in total.

Rohit Srinivas 2D
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Re: Kp?

Postby Rohit Srinivas 2D » Sun Jan 17, 2021 9:03 pm

Yes, this is because ideal gasses assume that they do not interact with each other as their collisions are considered negligible. Hence, their partial pressures are calculated which is equal to their "concentration". Additionally, the units for Kp do not matter as they will cancel out if the equation is set up correctly.

Bhuvan Kommineni 3L
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Re: Kp?

Postby Bhuvan Kommineni 3L » Sun Jan 17, 2021 9:06 pm

Partial pressure is only applicable to gases!

305572629
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Re: Kp?

Postby 305572629 » Sun Jan 17, 2021 9:15 pm

yes- in some tricky problems liquids and aqueous components may be included, but just emit them since partial pressure can only apply to gases.

Arezo Ahmadi 3J
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Re: Kp?

Postby Arezo Ahmadi 3J » Sun Jan 17, 2021 9:26 pm

Yes, as partial pressure can only be measured for gases. With Kc, you are looking at the concentrations of substances, in which case you would omit solids and liquids.

Bai Rong Lin 2K
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Re: Kp?

Postby Bai Rong Lin 2K » Sun Jan 17, 2021 10:00 pm

I believe it is measured for gases.

Lauren Mungo 1K
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Re: Kp?

Postby Lauren Mungo 1K » Sun Jan 17, 2021 10:03 pm

yes, partial pressure applies to gases while molar concentrations applies to aqueous compounds

Mansi Solanki 3A
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Re: Kp?

Postby Mansi Solanki 3A » Sun Jan 17, 2021 10:04 pm

Yes, partial pressure applies to gases and can be used for the Kp value.

Bella Bursulaya 3G
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Re: Kp?

Postby Bella Bursulaya 3G » Sun Jan 17, 2021 10:06 pm

Yep, only for gases because remember that solids and liquids cannot have partial pressures. Therefore, partial pressures only apply to gases.

Carlos Martinez 2K
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Re: Kp?

Postby Carlos Martinez 2K » Sun Jan 17, 2021 10:08 pm

yes, Kp would only apply to gasses. Also remember that Kc does not apply to pure liquids or solids.

Jerry_T
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Re: Kp?

Postby Jerry_T » Sun Jan 17, 2021 10:11 pm

Partial pressure only applies to gases because you cannot change the pressure of liquids and solids significantly.

Jaclyn Schwartz 1I
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Re: Kp?

Postby Jaclyn Schwartz 1I » Sun Jan 17, 2021 10:18 pm

Partial Pressures are only for gases in this course!

Brandon Gruender 3F
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Re: Kp?

Postby Brandon Gruender 3F » Sun Jan 17, 2021 10:20 pm

Yes, partial pressure only applies to gases.

Giselle Granda 3F
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Re: Kp?

Postby Giselle Granda 3F » Sun Jan 17, 2021 10:20 pm

Yes, partial pressure only applies to gases, and when you set up your Kp expression, you use parentheses instead of brackets which are used for concentration. It shouldn't be a big deal however if you use brackets or parenthesis because it will not make a difference in your answer.

Diana Aguilar 3H
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Re: Kp?

Postby Diana Aguilar 3H » Sun Jan 17, 2021 11:38 pm

Yes, like many have stated, partial pressure only applies to gases!

Jasmine Yi 1G
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Re: Kp?

Postby Jasmine Yi 1G » Fri Jan 22, 2021 3:08 pm

Yes, Kp is for gases

Yeonjoo Kim 2B
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Re: Kp?

Postby Yeonjoo Kim 2B » Fri Jan 22, 2021 4:36 pm

Yes, partial pressure only applies to gases!

AJForte-2C
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Re: Kp?

Postby AJForte-2C » Sun Jan 24, 2021 9:52 pm

Partial pressure only applies to gases, so youll only solve for Kp when youre being asked about gases.

AlbertGu_2C
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Re: Kp?

Postby AlbertGu_2C » Sun Jan 24, 2021 10:06 pm

Kp is solved the same way as Kc is, except for partial pressures in place of concentrations

Christine Nguyen 3D
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Re: Kp?

Postby Christine Nguyen 3D » Sun Jan 31, 2021 7:49 pm

Minahil_Tufail_3I wrote:Yes, I believe partial pressure only applies to gases!


thank you :)

Christine Nguyen 3D
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Re: Kp?

Postby Christine Nguyen 3D » Sun Jan 31, 2021 7:50 pm

Giselle Granda 3F wrote:Yes, partial pressure only applies to gases, and when you set up your Kp expression, you use parentheses instead of brackets which are used for concentration. It shouldn't be a big deal however if you use brackets or parenthesis because it will not make a difference in your answer.


Thank you for the clarification! I oftentimes forget to replace the brackets with parentheses :)

Christine Nguyen 3D
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Joined: Wed Sep 30, 2020 9:40 pm

Re: Kp?

Postby Christine Nguyen 3D » Sun Jan 31, 2021 7:51 pm

605291562 wrote:Yeah, I believe he said in lecture for the purpose of this class we only need to think of partial pressure applied to gasses



Thank you so much, hopefully, there's nothing more to be learned for that haha :)

Neel Sharma 3F
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Re: Kp?

Postby Neel Sharma 3F » Sun Jan 31, 2021 8:24 pm

Yes, partial pressures only apply to gases. I have noticed that K by itself indicated the equilibrium constant for gas reactions using bar as the standard measurement. Professor Lavelle allowed us to use atm interchangeably. Kc indicates concentration values using molarity. Hope this helps!

Victor Qiu 1C
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Re: Kp?

Postby Victor Qiu 1C » Sun Jan 31, 2021 9:17 pm

Yes, partial pressure only applies to gases. Just imagine adding a solid, a liquid, and a gas into a closed box. The solid and liquid would just occupy some volume of that box, but the gas would occupied the entire volume of that box. Therefore, only the gas would have partial pressure.

Vivian_Le_1L
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Re: Kp?

Postby Vivian_Le_1L » Sun Jan 31, 2021 9:45 pm

Yes, Kp only applies to partial pressure of gases, while Kc can have concentrations of both gases and aqueous solutions.

ColmConnolly3D
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Re: Kp?

Postby ColmConnolly3D » Sun Jan 31, 2021 9:50 pm

Just a quick note as to why:

For at the level of precision we will be dealing with solids and liquids are incompressible. Thus, a change in PRESSure cannot affect the concentration of such substances.

Hope this helps!

Colm

Jenaye Brelland 2I
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Re: Kp?

Postby Jenaye Brelland 2I » Sun Jan 31, 2021 11:05 pm

Yes, partial pressure only applies to gases.


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