Factors affecting K

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Sydney Pell 2E
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

Factors affecting K

Postby Sydney Pell 2E » Sun Jan 19, 2020 10:39 pm

Why does the temperature change the value of K while pressure and concentration don't?

MingdaH 3B
Posts: 133
Joined: Thu Jul 11, 2019 12:17 am

Re: Factors affecting K

Postby MingdaH 3B » Sun Jan 19, 2020 10:45 pm

Pressure and concentration changes will change the forward and backwards reactions at a rate that keeps the value of K, while temperature will favor one or the other, changing the value of K.

Sofia Barker 2C
Posts: 101
Joined: Wed Sep 18, 2019 12:21 am

Re: Factors affecting K

Postby Sofia Barker 2C » Mon Jan 20, 2020 12:51 am

Pressure and concentration do not permanently alter the equilibrium ratio of products to reactants because the reaction will simply shift in response to produce more of the reactants or products until K is once again achieved. Temperature, however, permanently alters K and I believe it is because temperature impacts the energy of a reaction. There is a certain amount of activation energy needed for products to be formed, and there is a certain amount of energy produced along with the products. With a change in temperature, these energies change and thus the way the reaction occurs shifts along with K.

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