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November 01, 2025, 10:56:25 am
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Author Topic: Dilution and equilibrium  (Read 1194 times)  Share 

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deledio

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Dilution and equilibrium
« on: November 11, 2008, 02:29:07 pm »
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can somebody explain to me what happens when water is added to an equilibrum system? which side will it favour?
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Collin Li

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Re: Dilution and equilibrium
« Reply #1 on: November 11, 2008, 02:32:48 pm »
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Depends. If water is added to an aqueous system, it will favour the side with more aqueous particles.

If water is added to a gaseous system (as a gas), where water is a part of the reaction (in gas state), then it will favour the side that doesn't have water!
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deledio

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Re: Dilution and equilibrium
« Reply #2 on: November 11, 2008, 02:43:12 pm »
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why is an aqueous solution does it favour the side with the most aqueous molecules?
eg. Fe3+(aq) + SCN-(AQ) <--> Fe(SCN)2+(aq)
Why does addition of H20 see back reaction favoured? I would have thought the dilution would cause the number of collsions between Fe3+ and SCN- to decrease relative to Fe(SCN)2+
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Collin Li

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Re: Dilution and equilibrium
« Reply #3 on: November 11, 2008, 03:13:57 pm »
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Certainly! That's why the back reaction is favoured! Since the collisions of reactants decreases, the backward rate of reaction increases relative to the forward rate of reaction!
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deledio

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Re: Dilution and equilibrium
« Reply #4 on: November 11, 2008, 03:17:55 pm »
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my bad. brain fade there thanks for the help
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