K - constant

[205898077]

Does the K constant also change if the concentration/pressure changes, or only with temperature?

[Aarush_Maddela_3A]

K only changes with temperature. Pressure and volume will never change the value of K, because changes in these two values will always lead the reaction to shift to recreate the set ratio of products and reactants at equilibrium. However, temperature is an important factor which determines whether reactions will proceed or not, and thus changing temperature will directly change whether reactants are used to make products or vice versa. This change in equilibrium concentrations will change the value of K.

[megan nakamoto 2I]

K only changes in response to a change in temperature. It does not change in response to changes in pressure or concentration. Concentration variations merely cause the reaction to shift, and after time passes it will return to equilibrium and have the same equilibrium constant. Pressure changes affect reactant and product concentrations, so it has the same outcome as a concentration change. Temperature is different because it shifts the equilibrium, not the reaction, and therefore there will be a new K.

[Sophie Vansomphone 1J]

K only changes for temperature. This is due to temperature shifting the equilibrium. Meanwhile pressure and concentration does not do that.

[Miles Dailey 1K]

A change in pressure, caused by a decrease in volume, may change Q for a reaction but not K. This means that the reaction may shift either left or right based on the new value of Q, but it will approach the same equilibrium constant K that it had before.

[Paul Torres 2I]

I believe concentration only affects the rate of the reaction and causes the reaction to shift, not the rate constant K. In terms of pressure change, it also only causes the reaction to shift to either the left or right side of the reaction and does not affect the rate constant K. Therefore, temperature is the only factor that can cause a change in the rate constant K.

[renee chowdhry 1A]

K only changes with temperature because there would be a shift in equilibrium.

[Ryan Shelburne 3D]

K is a constant that only changes when the temperature changes as this would lead to a different distribution of products and reactants.

[905722616]

The only way that K will change, is if temperature is changed. Pressure and volume will never affect the value of K from what I have learned so far under Lavelle. Hope this helps, go Bru!

[Harsha Kancharla 2E]

The entire point of having an equilibrium "constant: is that this value can't get impacted when the pressure or volume changes. A change in temperature would impact equilibrium and the factors like pressure and volume would not impact this so K would change only with a change in temperature.

[Julia_Wong_1H]

K changes when there is a change in temperature because it shifts the equilibrium of the chemical reaction. Concentration and pressure do not have the effect. Therefore, K only changes when there is a change in temperature.

[Gabriela Alfaro]

K does not change when there is a change in concentration or a change in pressure. So yes, only with temperature.

[Lale Kacharian 2K]

The only way K can change is with a change in temperature as it leads to an increase in P or R.

[Emily Lee 2H]

K only changes when temperature changes because it effects the stability of the molecules which can shift the reaction.

[yesmal1J]

As mentioned, the K constant only changes with temperature because the equilibrium would shift. For example with an endothermic reaction, K will increase with an increase in temperature favoring reactants. Then with a temperature increase to an exothermic reaction, K will decrease favoring products.

[Kimberly_Wu_3H]

K only changes with temperature since there will be a shift in equilibrium.

[Anthony Lau-Xiao 1E]

Yes, K only changes with temperature. Since adding heat to a reaction can cause more products to be made, so equilibrium will shift to the left to account for that. On the other hand, decreasing heat/making it cooler could shift it to where less products are being made and there are more reactants so equilibrium will shift to the right.

[Mallika Mathew]

it only changes with the temperature

[Vera B 2C]

Hi there! From what I understand, K will never change unless there is a shift in the equilibrium (it is a constant). Thus, K will change in response to a temperature change which would change reaction rates, but not in response to pressure or concentration changes, which would result in an initial change but eventually stabilize back to the same values needed for equilibrium.

[Allison Brookhart 2J]

K changes with temperature changes because it shifts the equilibrium in based on the enthalpy of the reaction. if you raise the temperature of an endothermic reaction, more products will be produced, and if you raise the temperature of an exothermic reaction, more reactants will be produced.

[Camila Garcia 1F]

K is a constant value and will only change if there is a change in temperature which affects the reaction. Besides that, everything else like concentration and pressure will not affect k.

[606026147]

The value of K only changes with temperature. Concentration and pressure does not affect K.

[Karissa_Lee_1A]

K will only be affected by the change in temperature.

[Daniel Hong 3F]

K will be only affected by the change of its temperature. The pressure and concentration of its reaction will not affect the constant K.

[jennacostello8]

K is only affected by temperature change.

[Caitlin_Chheda_1K]

Hi! The K constant does not change with concentration or pressure changes. Concentration and pressure changes do effect the equation, which can be explained by Le Chatelier's Principles. K only changes with temperature.

[Brandon_G_1H]

Hello! Only temperature affects K. Pressure and concentration do not change the value of K in any way.

[Avani Pammidimukkala 2F]

The constant K only changes with temperature, not pressure or volume. If you increase or decrease the volume or pressure, the concentrations will be affected, which will just cause the reaction to work its way back to equilibrium at the same rate K. However, a change in temperature completely changes the numerical value of the constant K as the rate also changes.