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Luyan Zhang - 2D
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Postby Luyan Zhang - 2D » Wed Jan 08, 2020 5:22 pm

For Kc and Kp, would the constant be the same no matter whether you plug in the concentration or the partial pressure?

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Re: K

Postby nehashetty_2G » Wed Jan 08, 2020 5:27 pm

Yes, it should be! Because, the only reason we use Kp versus Kc is based on the phases of the reactants/products (and whether the concentration or partial pressure is give to us for gases).

Vincent Leong 2B
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Re: K

Postby Vincent Leong 2B » Wed Jan 08, 2020 6:07 pm

The only thing that affects the equilibrium constant or the equilibrium conditions of the reaction is temperature. Understanding the E in the ICE table also helps when explaining why this is or how initial concentration/partial pressures will impact the concentrations/partial pressures of products and reactants at equilibrium.

Natalie Benitez 1E
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Re: K

Postby Natalie Benitez 1E » Wed Jan 08, 2020 6:29 pm

I'm not sure if the constant Kc will be the same as Kp but I do know that they are used on whether you were given concentrations or if you were given partial pressures.

Sydney Myers 4I
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Re: K

Postby Sydney Myers 4I » Wed Jan 08, 2020 8:19 pm

Since the concentration and the pressure can be related by a factor of R*T (using the ideal gas law), the K should be the same whether you use partial pressures of temperature.

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Re: K

Postby Abigail_Hagen2G » Thu Jan 09, 2020 11:45 am

It will be the same, because even if you use partial pressure instead of concentration, you would still be able to convert between the two.

Manav Govil 1B
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Re: K

Postby Manav Govil 1B » Thu Jan 09, 2020 2:59 pm

K is the equilibrium constant, which can be measured by either comparing the concentrations of the reactants and the products in the reaction, or the partial pressures of the reactants and products in the said reaction. Since K is a constant, whenever it is used (as Kc or Kp), it should equate. With this knowledge, you can potentially find missing partial pressures or concentrations if proved information of the latter.

Astrid Lunde 1I
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Re: K

Postby Astrid Lunde 1I » Thu Jan 09, 2020 4:52 pm

Yes it will still be the same, but Kc is in terms of Moles and Kp is in terms of Bars.

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Re: K

Postby 205150314 » Thu Jan 09, 2020 10:32 pm

If Kc and Kp are suppose to be the same, then why does the chart on 5G.2 have different values for some K and Kc?

Ruth Glauber 1C
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Re: K

Postby Ruth Glauber 1C » Fri Jan 10, 2020 9:15 am

Yes I think so!

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Re: K

Postby gabbymaraziti » Fri Jan 10, 2020 11:13 am

Kc and Kp are the same, they are just used for reactions in different states.

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