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equilibrium constant

Posted: Fri Nov 25, 2016 9:08 am
by 704709603
Hi,
Why is a side favored when a rxn is at equilibrium? It seems like neither side should be favored if a rxn has the same forward and reverse rates? I guess I'm wondering why we can have a run at equilibrium with different concentrations on both sides, or are the rates and concentrations not related?

Re: equilibrium constant

Posted: Fri Nov 25, 2016 10:41 am
by Rosalva_Mejia_41
A side really isn't favored in equilibrium. Its simply if one side has more concentration of ions, then it'll be more. I don't think the rate is really related. Reverse and forward reactions go at the sams rate. And since it's at equilibrium, one side adapts to keep it that way.

Re: equilibrium constant

Posted: Fri Nov 25, 2016 12:15 pm
by michaeljwilson3
This is a little off topic, but do we need to know how temperature affects equilibrium? If so, how does it?

Re: equilibrium constant

Posted: Fri Nov 25, 2016 12:34 pm
by Alyssa_Wieand_2G
I think we need to know the general way in which temperature affects equilibrium by first determining if the reaction is endothermic (heat added with reactants) or exothermic (heat added with products). If the reaction requires heat (endothermic), then heating will favor the forward direction/formation of products. If the reaction gives off heat (exothermic), then heating will favor the reverse direction/reactant formation.