Question $3$:

Consider the plot shown below. Suppose that you have three reactors: $20L$ PFR$,15L$ CST and $25L$ CSTR$.$

Which single reactor would result in the largest conversion? What will the final conversion be for that reactor? Justify your answer.

If you were to use two out of the three reactors in series, which two would you use and in what sequence would you use them?