How do I add the reaction kinetics law for a pseudo-first order rate reaction?

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Molly Lord
Molly Lord 2011-1-23
I am creating a model of a reaction of two species. The reaction is pseudo-first order rate reaction. The reaction is as follows:
A + B -> P
Reaction Rate should be:
k*A
(B is not involved in reaction rate calculation, as it is added in excess.)
How do I add the reaction kinetics law for a pseudo-first order rate reaction? It does not seem I could use "MassAction" option.

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回答（1 个）

Rick Paxson
Rick Paxson 2011-1-27
Hi,
The way to do this is to directly specify the reaction rate for the reaction rather than specifying a kinetic law. That is if you want k*A to be the rate.
If you have the case where the concentration of B remains constant but participates in the reaction rate you can specify that by setting B to be a boundary condition. Doing this (and specifying Mass Action as the kinetic law) will result in a reaction rate of K*B*A but B will be constant. (i.e. k' = K*B) and the reaction rate will be k'*A. Let me know if this answers your question.

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