In terms of LeChatelier's principal, why an increase in temperature increases the solubility of...?

Question

Doing this chemistry homework..
I swear I never learned any of this.
Anyway,
given this equilibrium equation at 298 K:

.....................................H20........................................................
KNO3(s) + 34.89kJ <<<>>> K(aq)+ NO3

Describe, in terms of LeChatelier's Principle, why an increase in temperature increases the solubility of KNO3.


I also have this question. I did it, but Im not sure of my answer:
The Equation indicates that KNO3 has formed a saturated solution. Explain, in terms of equilibrium, why the solution is saturated.


Thank you in advance for all help given! I really appreciate it!

NO3 is aqueous, if that helps..

Answer 1

Imagine that you are adding heat as a reactant. If you add heat, the reaction will be forced to the right (into teh aqueous components).

Answer 2

Dear Friend,

Equilibrium(Chemical) - Chemical equilibrium is the state in which the concentrations of the reactants and products have no net change over time. Usually, this state results when the forward chemical reactions proceed at the same rate as their reverse reactions. The rates of the forward and reverse reactions are generally not zero but, being equal, there are no net changes in any of the reactant or product concentrations. This process is known as dynamic equilibrium. Fundamentally, reactions do not go fully to completion, but reach an equilibrium, because of the entropy of mixing associated with reaction.

This is an exothermic reaction when producing K+NO3. If we were to lower the temperature, the equilibrium would shift in such a way as to produce heat. Since this reaction is exothermic to the right, it would favour the production of more K+NO3. In practice, in the Haber process the temperature is instead increased to speed the reaction rate at the expense of producing less NO3.

Saturation is the point at which a solution of a substance can dissolve no more of that substance and additional amounts of that substance will appear as a precipitate. This point of maximum concentration, the saturation point, depends on the temperature of the liquid as well as the chemical nature of the substances involved.

Thats why your solution has turned to be the saturated one.

Hope this piece is definetely a help for you.
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Answer 3

Increasing the temperature adds heat on the left side of the equation. Le Chatelier's principle states that if you add a component that appears on the left side of the equation, it will make the reaction move toward the right.