## ICE table

205192823
Posts: 100
Joined: Wed Sep 18, 2019 12:19 am

### ICE table

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

Veronica_Lubera_2A
Posts: 106
Joined: Sat Sep 14, 2019 12:16 am
Been upvoted: 1 time

### Re: ICE table

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
Posts: 35
Joined: Mon Jun 17, 2019 7:24 am

### Re: ICE table

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
Posts: 108
Joined: Thu Jul 25, 2019 12:17 am

### Re: ICE table

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
Posts: 94
Joined: Wed Nov 14, 2018 12:22 am

### Re: ICE table

You use the stoichiometric coefficients

Amir Bayat
Posts: 115
Joined: Sat Sep 07, 2019 12:16 am

### Re: ICE table

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.