Overall reaction order
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Overall reaction order
Can the overall reaction order be zero? In that case, what determines the rate of reaction if it is not the concentration of the reactants?
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Re: Overall reaction order
I believe it can be if all the reactants in the reaction are zero-order. The overall order of the reaction is simply based on all the reactants so if each reactant order is zero then the order would be zero and I guess the rate law would only depend on the rate constant.
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Re: Overall reaction order
This is very rare, and I haven't seen it yet but I believe that theoretically yes, a reaction can have an overall order of zero if all the reactants are zero order as well. It just means that the speed of the reaction is solely dependent on the rate constant.
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Re: Overall reaction order
It would be soley based on the rate constant, but this situation probably won't come up as it is very rare
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Re: Overall reaction order
If all the reactants are zero order, then it would technically be possible. However, that case doesn't occur very often.
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Re: Overall reaction order
The overall reaction order can be zero if all reactants are zero-order. This would mean that the rate of the reaction would just be based on the constant, and not the initial values of the reactants.
Re: Overall reaction order
It is possible but not likely. But usually at least one reaction is not zero-order.
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Re: Overall reaction order
I believe it only relies on k and occurs when there is some catalyst or enzyme involved that is fully saturated.
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Re: Overall reaction order
As others have said, it is possible if all the individual reactants are zero-order as well. However, I haven't seen any problems like that in the textbook or Sapling, so I assume it is rare and doesn't really occur. I would assume that the rate of the reaction would be based on the rate constant only.
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Re: Overall reaction order
It can but it is very rare. It would then be based off of the rate constant.
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Re: Overall reaction order
Hey you guys, simply here to affirm the statements above. I believe it can be a zero reaction only if all the reactants in the reaction are zero-order although it is not often seen. Still, it is not impossible just not really seen.
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Re: Overall reaction order
Theoretically yes, but given that the only thing that would determine the rate of the overall reaction at that point would be the rate constant k, it isn't exactly a common phenomenon.
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Re: Overall reaction order
It is rare, but theoretically yes. All of the reactants would have to be zero order for this to occur.
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Re: Overall reaction order
If all of the reactants were to be zero-order, the reaction would be a zero order reaction.
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Re: Overall reaction order
If the overall reaction order were to be zero that would mean all reactants have zero order. The rate law would then just be equal to the rate constant (k) and would not depend on the concentrations.
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Re: Overall reaction order
This could only happen if all the reactants are in zero-order. This means that the rate law would just equal to k and not be dependent on the concentrations.
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Re: Overall reaction order
For the overall reaction to zero-order, all of the reactants would be zero-order and the rate law would only depend on k.
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Re: Overall reaction order
It should be possible, but I assume it's very rare. As students, we'll probably never see a fully zero-order reaction.
Re: Overall reaction order
If the sum of everything is zero, then the overall reaction would be. Though it would be really rare.
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Re: Overall reaction order
If all of the reactants in a reaction are zero order then yes, I believe the overall equation itself would also be zero order, since it is the sum of the order of the reactants. The rate law then would depend on k. I can't imagine, however, that this would happen very often, although it is possible.
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Re: Overall reaction order
Hi! Theoretically, the overall reaction order can be zero if changes in each of the reactants have no impact on the reaction rate, which is highly unlikely. Hope that helps!
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