Example: Gas Phase Reaction in a PFR

	(1)
	(2)

Mole Balances	A:
	B:
	C:
	D:
Rate Laws	(Rxn i)
Species A
For reaction (2):
Species B
Species C
Species D
Stoichiometry
Combine

Evaluate Using Polymath
	Parameters
	Initial Conditions
	Use the Polymath ordinary differential equation solver.

For a CSTR:

A:			B:
C:			D:
Total:   FT = FA + FB + FC + FD
Five Equations and Five Unknowns
	Use the Polymath nonlinear equation solver.