Chemical Forums
Chemistry Forums for Students => High School Chemistry Forum => Topic started by: GregoryC4 on October 26, 2014, 02:45:38 PM
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Lets say you have a equilibrium system:
CoCl4-2 {blue} + 6 H2O Co(H2O)6+2 {red} + 4 Cl- + heat
If you were to add KCl to the system, which side does the the compound add to? What is the chemical entity formed? Confused ???
Thanks for your help everyone.
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KCl will dissociate to K+ and Cl-. K+ doesn't react with anything in the system - it is a spectator ion. The Cl- will increase the concentration of Cl- already present. What effect will this have on the equilibrium?
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KCl will dissociate to K+ and Cl-. K+ doesn't react with anything in the system - it is a spectator ion. The Cl- will increase the concentration of Cl- already present. What effect will this have on the equilibrium?
Equilibrium will shift to the left to negate the increased concentration on the right? Thanks for your help, very simple and informative answer.
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If a compound where both the ions are "spectator ions", how would the equilibrium be affected? Would it even be affected at all?
My guess would be it just reduces the overall concentration at equilibrium.
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If you just add a small amount of solid it won't significantly affect the concentrations. If you add it as solution, however, the concentrations will be reduced. If you add a significant amount of ions, you will change the ionic strength, and therefore the activity coefficients. Have you come across the concept of activity yet?