Calculating Equilibrium Concentrations

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Carolina Gomez 2G
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Joined: Wed Sep 30, 2020 9:32 pm

Calculating Equilibrium Concentrations

Postby Carolina Gomez 2G » Sun Jan 10, 2021 12:40 pm

Just want to make sure that I am thinking of this right. When using an ICE chart to find the equilibrium concentrations we do not include any solids or liquids since those compounds are not included in solving for the equilibrium constant.

Simrah_Ahmed1J
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Joined: Wed Sep 30, 2020 9:49 pm

Re: Calculating Equilibrium Concentrations

Postby Simrah_Ahmed1J » Sun Jan 10, 2021 12:46 pm

Yes, so because substances as solids and liquids don't really change very much in molar concentration in a reaction, we don't use them to calculate K at all, so therefore we do not need to pay attention to them in our ICE chart bc they're not going to be used in our K equation anyway.

Eliot Kagan 2G
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Re: Calculating Equilibrium Concentrations

Postby Eliot Kagan 2G » Sun Jan 10, 2021 1:23 pm

You should be careful with the liquids. While solvents aren't taken into account for the K value, liquids that are reacted together can be involved in the K concentration.

Rose_Malki_3G
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Re: Calculating Equilibrium Concentrations

Postby Rose_Malki_3G » Sun Jan 10, 2021 1:26 pm

You do not include solids nor solvents because their concentrations do not change by any significant amount.

LeanneBagood_2F
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Re: Calculating Equilibrium Concentrations

Postby LeanneBagood_2F » Sun Jan 10, 2021 4:11 pm

Eliot Kagan 2G wrote:You should be careful with the liquids. While solvents aren't taken into account for the K value, liquids that are reacted together can be involved in the K concentration.

can you (or anyone else who reads this) please explain this a bit more? i thought for the sake of this class we only take into consideration gases when calculating for K?

Kaihan_Danesh_2J
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Joined: Wed Sep 30, 2020 9:40 pm

Re: Calculating Equilibrium Concentrations

Postby Kaihan_Danesh_2J » Sun Jan 10, 2021 4:19 pm

Yes, you are right. Solids and liquids are not included in any of the equilibrium concentration or constant calculations.

manisha_joseph_1H
Posts: 92
Joined: Wed Sep 30, 2020 10:01 pm

Re: Calculating Equilibrium Concentrations

Postby manisha_joseph_1H » Sun Jan 10, 2021 4:21 pm

Yes, you do not need to include the concentrations of solids or liquids in the ICE box chart as their concentrations do not change significantly to the point where they would have an affect on K.

Abhinav Behl 3G
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Joined: Wed Nov 18, 2020 12:25 am

Re: Calculating Equilibrium Concentrations

Postby Abhinav Behl 3G » Sun Jan 10, 2021 6:03 pm

That's correct. The purpose of using ICE tables is to find concentrations of reactants/products at equilibrium so that we can solve for K (if the question asks to solve for K). And, as we already know, solids and liquids serve no purpose when calculating K, so they can be left off the ICE table.

Ansh Patel 2I
Posts: 93
Joined: Wed Sep 30, 2020 9:42 pm

Re: Calculating Equilibrium Concentrations

Postby Ansh Patel 2I » Sun Jan 10, 2021 6:05 pm

Hi! You're right, we don't have to include the concentrations of solids or liquids in the ICE chart because their concentrations don't change significantly.

jasmineculilap_3F
Posts: 90
Joined: Wed Sep 30, 2020 9:40 pm

Re: Calculating Equilibrium Concentrations

Postby jasmineculilap_3F » Sun Jan 10, 2021 6:06 pm

yeah, solids and liquids aren't included because their change in concentration is very small.

Lauren Mungo 1K
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Re: Calculating Equilibrium Concentrations

Postby Lauren Mungo 1K » Sun Jan 10, 2021 6:11 pm

Yes this is correct. This is because solids and solvents do not change in concentration very much.


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