Destroyer Chem #87

[JNew]

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Don't really understand why if Kw got smaller, the reaction must be endothermic. Anybody?

 

[Chemwiz]

Don't really understand why if Kw got smaller, the reaction must be endothermic. Anybody?

We consider "heat" as a part of reactants. Since we're decreasing the temperature, this equivalents to removing heat from reactants. By Le Chatelier's Principle, rxn favors the formation of reactants b/c heat is removed, so Kw decreases.