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Temperature

Posted: Thu Jan 23, 2020 5:41 pm
by eduardomorales5
Why does temperature affect the K? Does increasing heat for an exothermic reaction shift it to the reactants or products?

Re: Temperature

Posted: Thu Jan 23, 2020 5:43 pm
by Bilal Pandit 1J
For exothermic reaction, increasing the temperature will decrease the K, while for endothermic, increasing the temperature will increase the k

Re: Temperature

Posted: Thu Jan 23, 2020 6:03 pm
by Jaklin Astvatsatryan
For an exothermic reaction (ΔH is negative), K decreases with an increase in temperature. Increasing the temperature causes the equilibrium to shift to the left.

For an endothermic reaction (ΔH is positive), K increases with an increase temperature.

Re: Temperature

Posted: Thu Jan 23, 2020 6:25 pm
by Madelyn Romberg 1H
Temperature can be thought of as a reactant. If adding heat to a reaction, it will favor whichever direction has the positive change in H. This is because forming more of the "energy rich" molecule will harness more of the heat to minimize the net change of temperature of the environment. This is Le Chatelier's principle that reactions will try to minimize change when induced under some sort of stress.

Re: Temperature

Posted: Fri Jan 24, 2020 12:00 am
by Gurmukhi Bevli 4G
Increasing temperature decreases k for an exothermic reaction (which releases energy), and increasing temperature increases k for an endothermic reaction (which requires energy).

Re: Temperature

Posted: Fri Jan 24, 2020 1:39 pm
by Jocelyn Thorp 1A
heat can be considered a product (in an exothermic reax) or a reactant (in an endothermic reax), and thus adding or removing heat can cause the reaction to shift

Re: Temperature

Posted: Fri Jan 24, 2020 9:44 pm
by Emil Velasco 1H
Increasing and decreasing temperature changes the value of K because it acts as either a product or reactant (exothermic or endothermic respectively)