Equilibrium


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smurphy1D
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Joined: Mon Nov 18, 2019 12:18 am

Equilibrium

Postby smurphy1D » Wed Jan 08, 2020 9:31 am

What is the difference between Q and K?

Veronica_Lubera_2A
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Re: Equilibrium

Postby Veronica_Lubera_2A » Wed Jan 08, 2020 9:43 am

K is when the reaction reaches equilibrium. Q is a specific point in time before reaching equilibrium. We often compare Q to K; for example if Q<K then the reaction will shift to the right.

Michael Nguyen 1E
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Joined: Sat Aug 17, 2019 12:17 am

Re: Equilibrium

Postby Michael Nguyen 1E » Wed Jan 08, 2020 10:20 am

Q and K are calculated in the same way by using the same equation. However, K is a constant that is calculated using the concentrations when the reaction reaches equilibrium while Q changes as the reaction proceeds. Often, we compare Q and K to determine which direction the reaction will continue over time.

Qiu Ya Wu 4I
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Joined: Fri Sep 20, 2019 12:17 am

Re: Equilibrium

Postby Qiu Ya Wu 4I » Wed Jan 08, 2020 10:39 am

Q is known as the reaction quotient and K is known as the equilibrium constant. One important thing to note is that K stays constant for a specific reaction at a specific temperature while Q does not have a predetermined value.

Kavya Immadisetty 2B
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Re: Equilibrium

Postby Kavya Immadisetty 2B » Wed Jan 08, 2020 11:02 am

Although Q and K are calculated the same way, the difference is the state of the reaction at the time when this is calculated: Q can be any specific point of time while K must be when the reaction is at equilibrium.

Caroline Zepecki
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Re: Equilibrium

Postby Caroline Zepecki » Wed Jan 08, 2020 12:20 pm

Q is the constant of concentration at any point during the reaction, whereas K is the constant of concentration at equilibrium.

KBELTRAMI_1E
Posts: 108
Joined: Sat Jul 20, 2019 12:17 am

Re: Equilibrium

Postby KBELTRAMI_1E » Wed Jan 08, 2020 8:04 pm

Q is just used to compare to K in order to determine which reaction will proceed (toward product or reactant).

Hailey Kim 4G
Posts: 110
Joined: Sat Jul 20, 2019 12:16 am

Re: Equilibrium

Postby Hailey Kim 4G » Wed Jan 08, 2020 8:53 pm

K is the equilibrium constant, while Q is the reaction quotient. They are calculated the same way but you can compare Q and K to determine if the forward reaction or the reverse reaction is favored. If Q<K at some time during the reaction, then reactants are favored. If Q>K at some time during the reaction, then products are favored.


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