Lecture 10

Question 1

What is conversion?

Answer 1

The amount of a reactant that has been used up by reaction

Question 2

What is the formula for conversion?

Answer 2

X_A= Moles of A reacted/Moles of A fed

Question 3

How can conversion be negative for a reversible reaction?

Answer 3

The reaction runs in the reverse direction as was expected. This can happen sometimes. It means that the problem was not properly defined. We should never intentionally choose a product for out basis.

Question 4

What are the bounds on conversion for a irreversible reaction?

Answer 4

0<_XA<_1

Question 5

What are the bounds on conversion for a reversible reaction?

Answer 5

-xAe<_XA<_XAe

Question 6

What does the variable FAo represent?

Answer 6

molar flow of A entering a reactor or a system of reactors

Question 7

What does the variable FA represent?

Answer 7

molar flow of A at some point in a areactor or system of reactors

Question 8

What does the variable v represent?

Answer 8

volumetric flow rate

Question 9

What does the variable V represent?

Answer 9

reactor volume (gal, ft^3, liter, m^3… etc)

Question 10

What does the variable CAo represent?

Answer 10

initial concentration of A

Question 11

What does the variable CA represent?

Answer 11

concentration of A at some point

Question 12

What does the variable tau represent?

Answer 12

space-time within a reactor

Question 13

Since moles are not conserved, one can not consider gases to be ____ in flow systems.

Answer 13

constant volume