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lets consider the following reaction: $$ A + B \rightarrow C $$ Where the rate of reaction ($r$) can be expressed as: $$ r = k*c_a*c_b $$ Where $c_i$ is the concentration of species $i$ and $k$ is the reaction rate constant.

Hence the change in concentration of species A in a stirred-tank reactor (STR) is described as: $$ \frac{dc_a}{dt}=-r $$

But that is in the case of it being stirred, how would you model a batch reactor not stirred? Is it just a change in the reaction rate constant?

Thanks, for your time!

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  • $\begingroup$ Do the components mix when added to the reactor or do they separate to form two distinct layers? $\endgroup$
    – Solar Mike
    Nov 18 '21 at 13:33
  • $\begingroup$ @SolarMike Lets say its a liquid homogeneous mixture reacting with solid particles. If I don't get an answer here I might try in Chem stack, thanks! $\endgroup$
    – Mathsie
    Nov 18 '21 at 15:48

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