Temperature Affecting K

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Temperature Affecting K

Postby Stevin1H » Thu Jan 10, 2019 10:29 am

Can someone explain the concept behind how temperature affects the equilibrium constant value in terms of endothermic and exothermic? What changes in the system when the forward reaction is endothermic rather than exothermic, and vice versa?

MaanasO 1A
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Re: Temperature Affecting K

Postby MaanasO 1A » Thu Jan 10, 2019 11:23 am

Hello Stevin!

If the temperature increases, then more energy is provided. If the reaction is endothermic, then a higher temperature will support the forward reaction and shift the equilibrium to the right. If the reaction is exothermic, then the opposite will happen.

Hope that helps!

Fiona Jackson 1D
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Joined: Fri Sep 28, 2018 12:22 am

Re: Temperature Affecting K

Postby Fiona Jackson 1D » Thu Jan 10, 2019 3:22 pm

Hi! Another way that may be helpful to think about this is if a reaction is exothermic, treat heat as a product, and if it is endothermic, treat it as a reactant. Then, depending on the situation, if you increase product, the reverse reaction will ensue and K will be lowered and the opposite would happen if you increased reactant.

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