about equilibrium and le chatelier's principle?

Question

K+(aq) + NO3-(aq) --> KNO3(s)
would this reaction be exothermic or endothermic?
ALSO, i don't understand what happened to the system when the temperature was lowered and crystals of KNO3 formed (in terms of le chateliers principle).

Answer 1

If the temperature was lowered and crystals formed, then your equilibrium moved to the right. This is because it wanted to raise the temperature again, by going in the exothermic direction.