Concentrations

[Jorja De Jesus 2C]

When is concentration the only thing that affects K and when is it not the only thing?

[Lara Kristine Bacasen 1L]

I'm not sure if this answers your question but if the temperature is the same the concentration does not change the equilibrium constant (k). However, if you change the temperature it does change the equilibrium constant.

[Kayla Maldonado 1C]

I'm not sure if this answers your question but if the temperature is the same the concentration does not change the equilibrium constant (k). However, if you change the temperature it does change the equilibrium constant.

So temperature is the only thing that can affect the the equilibrium constant ?

[Lara Kristine Bacasen 1L]

I'm not sure if this answers your question but if the temperature is the same the concentration does not change the equilibrium constant (k). However, if you change the temperature it does change the equilibrium constant.

So temperature is the only thing that can affect the the equilibrium constant ?

Yes, I believe so. If you change the concentration of something in the mixture, the position of equilibrium moves in. Like from favoring products or the reactants. This happens to fix the change that was made but the K doesn't change.

[Matt F]

Changing the concentration or pressure can cause the equilibrium to "favor" the products or reactants, but in both cases the equilibrium constant K will stay the same. Only when temperature is changed is K changed because of a permanent change in the system's dynamics (depending on if it's endothermic or exothermic)

[Rory Simpson 2F]

Concentration and pressure only affects Q and not K; the reaction will shift accordingly to return to a ratio of reactants and products equal to K. Temperature actually changes K because of the changes in energy that are involved in the reaction.

[Anokhi Patel 2B]

K is only affected by the concentration when measuring Kc instead of the K for partial pressure Kp.

[Cavalli_1H]

concentration only affects K when you are working with Kc (involving aqueous solutions)

[Jocelyn Thorp 1A]

Changing the concentration or pressure can cause the equilibrium to "favor" the products or reactants, but in both cases the equilibrium constant K will stay the same. Only when temperature is changed is K changed because of a permanent change in the system's dynamics (depending on if it's endothermic or exothermic)

Adding on to this:

If the reaction is exothermic, adding heat will make k go down; cooling will make k go up.
If the reaction is endothermic, adding heat will make k increase; cooling will make k decrease.

[Veronica Lu 2H]

the concentration only affects the Kc not Kp

[Sreyes_1C]

I'm not sure if this answers your question but if the temperature is the same the concentration does not change the equilibrium constant (k). However, if you change the temperature it does change the equilibrium constant.

So temperature is the only thing that can affect the the equilibrium constant ?

Yes I believe temperature is the only thing that can affect it

[TimVintsDis4L]

Temperature is the only thing that affects the constant because even if the concentration changes, the equation will do its best to mitigate the change. Le Chatelier's Principle pretty much explains this.

[005324438]

Concentrations don't effect the K value in itself, but can effect the direction of the reaction. Only temperature can change the K value.