[Macroer]

An experiment was done to determine the rate law of a reactant.  If the reaction occurred faster(ex. by just stirring reactants), would the accuracy of rate law calculated increase?

I think that the accuracy would increase, because the rate law is most accurate for the initial concentrations at an specified temperature, and this changes more throughout a longer experiment, than a shorter one. So a faster experimental rate of reaction would increase the accuracy. Need some confirmation. Thanks.

[Matias Ekstrand]

I'm not an expert in chemical kinetics, but you always need to stir the solution which you test. If you don't, you will have a concentration that varies depending on what part of your solution you're looking at.

We could put it this way: If your solution was perfectly mixed with the same concentration of reactants all over, you wouldn't see an increase in the kinetics when you stir the solution.