Do solids and liquids count in Q?

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Cindy Adiwidjaja 1B
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Joined: Sat Jul 20, 2019 12:15 am

Do solids and liquids count in Q?

Postby Cindy Adiwidjaja 1B » Thu Jan 09, 2020 11:38 pm

So I know that for K, pure substances like solids and liquids do not change and therefore are not calculated into the K equilibrium. However, for the reaction quotient, Q, do we also not include these in our calculations?

Katie Kyan 2K
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Re: Do solids and liquids count in Q?

Postby Katie Kyan 2K » Thu Jan 09, 2020 11:39 pm

No you would leave out the solids and liquids when calculating Q.

rohun2H
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Joined: Wed Sep 18, 2019 12:19 am

Re: Do solids and liquids count in Q?

Postby rohun2H » Fri Jan 10, 2020 9:58 am

Q is calculated in the same manner as K, so no.

Catherine Daye 1L
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Joined: Wed Sep 11, 2019 12:16 am

Re: Do solids and liquids count in Q?

Postby Catherine Daye 1L » Fri Jan 10, 2020 10:21 am

Q is calculated the same way as K, so you only include gases and aqueous solutions.

William Francis 2E
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Joined: Wed Sep 18, 2019 12:20 am

Re: Do solids and liquids count in Q?

Postby William Francis 2E » Fri Jan 10, 2020 10:24 am

Nope. You do not include solids and liquids when calculating Q. It's just like calculating K except the reaction may or may not be at equilibrium.

Charysa Santos 4G
Posts: 107
Joined: Wed Sep 18, 2019 12:21 am

Re: Do solids and liquids count in Q?

Postby Charysa Santos 4G » Fri Jan 10, 2020 12:24 pm

As the others have said, because Q is calculated in the same manner as K, solids and pure liquids are not included in the expression.


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