Importance of n and k

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Importance of n and k

Postby jillian1k » Sat Mar 03, 2018 11:36 am

Why (conceptually) is the order of the rxn (n) more important than the rate constant (k) for explaining the mechanism of a reaction?

Kayla Danesh 1F
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Re: Importance of n and k

Postby Kayla Danesh 1F » Sat Mar 03, 2018 3:38 pm

The order of the reaction, n, can tell us a lot about the type of reaction we are dealing with. For example, if n=0, a zeroth order reaction, we know that the reaction proceed at a constant rate regardless of the time that has passed--this is often the case when an enzyme is fully saturated. But, if we are just given the constant k, then we wouldn't be able to tell from k alone that this is a zeroth order reaction.

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Re: Importance of n and k

Postby skalvakota2H » Sun Mar 04, 2018 1:38 am

The order of a reactant, n, explains more about the reaction mechanism because it directly describes how the concentration of a reactant affects the rate of the reaction. From this, the rate law can be used to calculate the reaction rate using known concentrations of reactants.

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