If the limiting reactant is not chosen as the basis of calculations, one could calculate a NEGATIVE concentration. See Example 4-2.
We will always use this basic algorithm and then just add to these steps to it, e.g. the energy balance. We will not deviate from these first four steps.
When studying catalytic reactions the rate law is developed in terms of partial pressure,
e.g. .
To rewrite the rate law just use ideal gas law to relate to concentrations CA and CB
and then write concentration in terms of conversion.
Writing partial pressures in terms of conversion
True but these are ideal CSTRs, and non ideal reactors and the perfect mixing assumption is discussed and modeled in the PRS. Once we understand ideal reactors (perfectly mixed), we can easily model non-ideal reactors.
It does continue to react to some extent. It depends on the temperature in the pipe! However, these are ideal reactors. Different models for Non-ideal reactors are discussed in the PRS but we must understand ideal reactors first.
Sometimes. See Lecture 6 on the CD-ROM.
It is quite a good assumption for turbulent flow. It is not valid for Laminar flow.
You are only interested in the ratio Z/Zo being the same, we don't care if Z doesn't equal one.
If epsilon is greather than 1, density is greater than if epsilon=0 because
A larger density results in a smaller change in pressure.