Rates of Progress

[Colton Shepard]

How are the rates of progress for a reaction calculated? For the reaction

aA+bB->C+D

the rate of progress would be

q=k[A]^a[B]^b,

but when I calculate this using the species concentration and rate coefficient data Cantera provides, I get a different answer than what Cantera provides with the forward_rates_of_progress method. Could someone help explain the difference? For reference, I am running on the stable release Cantera 3.1.0 and my OS is RHEL9. I have attached my example yaml input file and my test code for reference.

Thank you, 

Colton Shepard