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eq constant

Posted: Thu Jan 09, 2020 9:27 pm
by ursulavictorino1K
Why do we ignore the terms that are solids when calculating the eq. constat? Why does it not have an effect on the concentration?

Re: eq constant

Posted: Thu Jan 09, 2020 9:33 pm
by Ryan Yoon 1L
We ignore the terms that are solids when calculating the equilibrium constant because solids do not have concentration. Since it does not have a concentration, it can not be implemented in solving for the Reaction Quotient, Q, or Equilibrium constant, K.

Re: eq constant

Posted: Thu Jan 09, 2020 9:46 pm
by Janet Nguy 2C
My TA said that the activity of solids and liquids are essentially equal to 1, so when calculating the equilibrium constant solids and liquids do not matter because all the units are essentially dealing with the activity of a species.

Re: eq constant

Posted: Thu Jan 09, 2020 9:47 pm
by haileyramsey-1c
Solids and liquids are not included in the reaction quotient because at equilibrium they do not affect the reactant amount. Their activity in the reaction is 1.

Re: eq constant

Posted: Thu Jan 09, 2020 10:17 pm
by 205405339
Essentially solids and liquids are in such great excess and it is impossible to come up with a value for their concentration hence why they are omitted