ICE table

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205192823
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Joined: Wed Sep 18, 2019 12:19 am

ICE table

Postby 205192823 » Tue Jan 21, 2020 10:26 am

How do you determine the change in partial pressure ("C")?

Veronica_Lubera_2A
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Re: ICE table

Postby Veronica_Lubera_2A » Tue Jan 21, 2020 10:54 am

Reactants will have a - sign, products will have a + sign. Look for the coefficients in a reaction and that will determine whether you will have a +-2x if you have a 2 moles of that certain element or just a +-x for 1 mol.

Jessica Katzman 4F
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Joined: Mon Jun 17, 2019 7:24 am

Re: ICE table

Postby Jessica Katzman 4F » Tue Jan 21, 2020 1:23 pm

The "C" is determined by the number of moles of products and reactants created or decreased. The "C" column is filled with +x or -x multiplied by the stoichiometric coefficient of the product or reactant.

Esha Chawla 2E
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Joined: Thu Jul 25, 2019 12:17 am

Re: ICE table

Postby Esha Chawla 2E » Tue Jan 21, 2020 1:53 pm

205192823 wrote:How do you determine the change in partial pressure ("C")?


The "change" in any ICE table is the same regardless of if you are calculating Kp or Kc. To calculate the change, you simply look at the stoichiometric coefficient. Be careful when determining if the change is positive/additive or negative/subtractive.

BCaballero_4F
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Re: ICE table

Postby BCaballero_4F » Tue Jan 21, 2020 4:10 pm

You use the stoichiometric coefficients

Amir Bayat
Posts: 115
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Re: ICE table

Postby Amir Bayat » Tue Jan 21, 2020 4:25 pm

You look at the number of moles in addition to the concentrations. If there are 2 moles of a substance, then you need to multiply the "X" value by that number of moles - which is 2 in this case.


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