Time to Equilibrium: Reactants vs Products

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The discussion centers on whether the time taken to reach equilibrium in a chemical reaction is the same when starting from reactants versus products under identical conditions. There is an intuitive belief that this time is consistent, but participants express difficulty in finding references or proof to support this notion. The conversation suggests that switching the roles of reactants and products could provide insight, as it allows for examining the reaction from different starting points. One participant encourages self-investigation and application of existing models to explore the question further. While acknowledging the complexity of the topic, another participant highlights their familiarity with integrated rate laws and equilibrium law but admits to a lack of clarity on how to apply these concepts to the specific question. The discussion concludes with an acknowledgment that the time required to reach equilibrium could theoretically be infinite, depending on the model used.
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Is the time taken to reach equilibrium the same whether starting from reactants or products, under the same conditions? I think intuitively it is but cannot find a reference or proof.
 
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What happens if you switch the roles of the reactants and the products?
 
How do you mean?
 
I understood you to be talking about an equilibrium reaction ... when the products of a reaction themselves can react ... and, in turn, produce the initial reactants. You can start by mixing the products instead .. in which case they are the initial reactants and the roles have changed.

You should have some model for handling these sorts of reactions ... so have you tried applying the model both ways?
Put another way: I am trying to encourage you to investigate your question yourself instead of looking for some results obtained by someone else.

(But you could be thinking of something else.)
 
Thankyou for the clarification - I see what you meant.

I have thought at quite some length and a colleague of mine is equally at a loss. I am familiar withj the basics of integrated rate laws and the equilibrium law, but just cannot see how to apply this. I have found no reference to this question iun several standard texts, so, short of doing an experiment in the lab (which would only prove it for one case), I am lost! If you have an idea how to prove this, then by all means just give me some clues ... I am happy to wrestle with it once I have a direction to go in!

Many thanks
 
Technically time required to reach equilibrium is infinite.
 
@Borek: Depends on your model :)

@Miffymycat: how would you normally go about figuring the time to equilibrium?
 
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