Temperature Change

[Rose_Malki_3G]

Why when you increase temperature, the k value increases for an endothermic reaction?

[Bella Wachter 1A]

In an endothermic reaction, heat is a reactant. When you raise the temperature, this causes the reaction to shift right (away from the heat), to produce more products - this increases the numerator of K and makes K larger.

Hope this helps!

[Tessa House 3A]

Another way to think about this is using Le Chatelier's principle. If the reaction is endothermic, it uses heat. Therefore, if you increase the temperature, the equilibrium will shift in the forward direction (towards the products) to try to absorb some of this heat. This is to reduce the change that had been made to the system. The equilibrium shifting towards the product increases the value of K, because products are in the numerator of the equilibrium constant. I hope this helps!

[Rajshree 1F]

endothermic reactions use heat as a reactant therefore if u add a reactant, the product increases which raises the K value i believe

[Shreyank Kadadi 3K]

Heat is required for an endothermic reaction to occur in the forward direction. Therefore, the increase in temperature provides the endothermic reaction with the heat it needs to move in the forward direction.

[Armen_Isayan_2L]

Hello! When you increase temperature, the K value increases for an endothermic reaction because heat is a reactant. In essence, heat is crucial in an endothermic reaction so that it occurs in the forward direction. As the temperature rises, the reaction will shift right, which will ultimately produce more products, and the K value will increase.

[manisha_joseph_1H]

An endothermic reaction requires heat in order to continue. Therefore, an increase in temperature will cause an endothermic reaction to shift in favor of the products. Because this shift in the reaction favors the products, this means the concentrations of the products increase. Since the concentration of products are in the numerator of calculating the equilibrium constant, this means that there will be a bigger number in the numerator as the concentration of the products increased with the addition of temperature, meaning the equilibrium constant will increase as well.

[Jalaia Jackson 2G]

Since the reaction is endothermic that means the system will take in heat. This will cause the reaction to shift right towards the products. Since the system is requiring more heat this will cause K to increase since the numerator will increase.

[SashaAnand2J]

Hi Rose,
The K value increases for an endothermic reaction because heat is net-added to the system for the reaction to occur. When heat increases, the production of products can be increased in comparison. It helps to think of heat as a reactant in this case. When writing out the equilibrium constant for the new temperature, the numerator becomes larger, and the K value increases (of course, only when temperature is the variable that is changed).

[haley f]

Yes, in this situation K will be increased because the system is endothermic, but the K value will not always increase with a temperature increase, it really depends on if the system is endothermic or exothermic.

[Gwendolyn Hill 2F]

Hi!

An Endothermic reaction is defined as absorbing a net amount of heat, and an increase in temperature causes the reaction to favor product formation. Because the reaction starts to favor product formation, K will become a larger value (products over reactants is how you calculate K).

[605291562]

Hi! I agree with above that because endothermic reactions require heat it is like adding a reactant (even though that is not a perfect analogy) so the reaction will favor the products and K will increase. I'm not entirely sure how it would effect exothermic

[Madilyn Schindler 3E]

The K value increases for an endothermic reaction when the temperature increases because an endothermic reaction requires heat in order to produce its products. Therefore, when you increase the temperature, you are increasing the amount of heat that the reaction can use, meaning that the reaction is able to produce more products and thus increase the concentration of products. Since the K value is the concentration of products divided by the concentration of reactants, the K value will increase.

[Madeline Ogden 3B]

According to Le Chatelier's principle, all systems want to minimize any effect happening to them as much as possible. With that said, if you increase the heat in an endothermic reaction, the reaction will then begin to favor the products, and in turn, K will increase.

[Anastasia Yulo 1C]

Yes, for endothermic reactions, the k value increases when temperature increases. This website explains how temperature changes affect k: https://chem.libretexts.org/Bookshelves ... _Chemistry)/Equilibria/Le_Chateliers_Principle/Effect_Of_Temperature_On_Equilibrium_Composition/Exothermic_Versus_Endothermic_And_K

[Mandy Mg 2J]

Although heat is not technically a reactant in endothermic reactions, you can think about it as one. So if you increase heat, it would be like increasing a reactant. An increase in reactants would cause a shift to the right in the reaction because more products would be produced. And because K is a ratio of products to ratios and products have increased (once equilibrium is reached), the K value should increase.

[Caitlin_Doak_2H]

HI, the statements above look correct. Heat would effect the products in the endothermic reactions