Endothermic reaction, heating

[Danielle_Cho_3A]

If you have an endothermic reaction and you heat the reaction, shouldn't you get a smaller K value? However, in this problem, the K value gets bigger. Why is this the case?

[Chem_Mod]

In an endothermic reaction, heating the reaction would increase the K value and decreasing the temperature would decrease the K value.

[Raya Amin 2A]

Because this reaction is endothermic, that means the forward reaction is absorbing heat. When we heat the reaction, the reaction wants to minimize the effect of this change, so it favors the forward process, as this will absorb the heat. As a result, more products are being formed, and the equilibrium constant will be higher.

[Gregory_Kislik_2C]

In an endothermic reaction, heat is required for the reaction to proceed. If you add additional heat, more products will be formed, leading to a larger numerator in the equilibrium constant expression. This leads to a larger K because the temperature has changed, which is the only factor which will change the actual value of K. K cannot decrease, since it would require for more reactants to be produced, and the reverse reaction to be favored, which would require a loss of heat/drop in temperature. I hope this helps, and please let me know if there are any errors.

[Sarah Wang 2G]

Endothermic reactions require heat in order to form their products, so heat essentially acts like a reactant. When heat is added to the system, a “reactant” is added, so the system’s equilibrium would shift to favor the products more in order to balance the change. When more products are produced, the K value gets bigger since it is found by diving the concentration or products over the concentration of reactants.

[Luke Smith]

If you have an endothermic reaction and you heat the reaction, shouldn't you get a smaller K value? However, in this problem, the K value gets bigger. Why is this the case?

Hi, in the case of an endothermic reaction, adding heat will increase the amount of product generated. Since K=products/reactants, adding heat would give you a larger K value, not a smaller one.

[Madeline Redmond 2A]

In endothermic reactions heat is absorbs to to form the product, essentially making heat a reactant in an endothermic reaction. This means that when the temperature of a system is increased, in order to regain equilibrium the reaction favors product formation. Therefore K is increased and makes the product formation increased.