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### ICE Box Ratios

Posted: Sat Jan 26, 2019 7:57 pm
May someone please explain the ratios for the ice boxes that we do? How does "-x" work with ratios? Thank you.

### Re: ICE Box Ratios

Posted: Sat Jan 26, 2019 8:07 pm
What do you mean by ratios? As in Products/ Reactants? -x is how much product has been taken away.

### Re: ICE Box Ratios

Posted: Sat Jan 26, 2019 10:41 pm
-X is usually found in the "C" or the "change" row of the ICE table. It is not used when calculating K.

### Re: ICE Box Ratios

Posted: Sat Jan 26, 2019 10:55 pm
I'm not sure if this answers your question but if you mean ratios as in using the balanced equations then if the reaction is like A+B-->2C then on the products side of the ice table on the change line it would be -X and -X but for the products side it would be +2X. Hope that helped

### Re: ICE Box Ratios

Posted: Sun Jan 27, 2019 4:16 pm
For a majority of the ICE tables, "-x" will be located in the "C" or change row for the reactants, and "+x" will be located in the "C" row for the products. It is also important to remember to multiply "x" by the molar ration of that compound. For example, if 2 CO2 is one of your reactants, the change would be "-2x."

### Re: ICE Box Ratios

Posted: Sun Jan 27, 2019 8:24 pm
-x will always be on the reactant side, someone correct me if im wrong (:

### Re: ICE Box Ratios

Posted: Sun Jan 27, 2019 10:28 pm
-x is just what you subtract from the initial.

### Re: ICE Box Ratios

Posted: Sun Jan 27, 2019 10:38 pm
So the “x” usually comes to work when calculating the change the concentrations/pressures we don’t know the amounts of. The (-x) is applied to the reactants side, which means when you make the table i would draw a huge line between reactants and products and anything left of that line is negative.

### Re: ICE Box Ratios

Posted: Sun Jan 27, 2019 10:50 pm
basically think of it as x is negative for the reactants because these are being used up to form the positive products