WorksheetsChemical Reaction Engineering - Conversion and Reactor Sizing
Total questions: 14
Worksheet time: 8mins
Name one type of reactor.
(a)
Define the conversion of species A?
The rate of reaction
The total volume of the reactor
The number of moles of A reacted per mole of A fed
The number of moles of A fed
In a batch reactor, what is the equation for the number of moles of A that remain after time t?
N_A = N_A0 / X
N_A = N_A0 + X
N_A = N_A0 - X
N_A = N_A0 * X
What is the maximum value of conversion X for irreversible reactions?
X = 0
X = 1.0
X = 0.5
X = 0.8
What is the design equation for a CSTR?
V = -r_A / F_A0
V = F_A0 / -r_A
V = F_A0 * X / -r_A
V = X / F_A0
What does the term 'space time' refer to?
The time necessary to process one reactor volume of fluid
The total volume of the reactor
The rate of reaction
The concentration of reactants
Which equation is used to express the rate constant k?
Mole Balance Equation
Ideal Gas Law
Levenspiel Equation
Arrhenius Equation
What is the relationship between conversion and reactor volume?
Inversely proportional
Directly proportional
No relationship
Exponential relationship
What is the primary factor affecting the rate constant in gas-phase reactions?
Volume
Concentration
Pressure
Temperature
In a PFR, what is the design equation?
V = F_A0 * X / -r_A
V = X / F_A0
dV/dX = F_A0 / -r_A
V = -r_A * dX
What is the significance of the limiting reactant in a reaction?
It decreases the reactor volume
It increases the reaction rate
It has no effect on the reaction
It determines the maximum conversion
What is the primary purpose of reactor sizing?
To achieve a certain conversion
To determine the temperature
To measure the flow rate
To calculate the pressure
What does the term 'space velocity' refer to?
The concentration of reactants
The volume of fluid processed per unit time
The rate of reaction
The time required for a fluid to pass through a reactor
What is the effect of temperature on the rate constant k?
It only affects gas-phase reactions
It increases the rate constant
It decreases the rate constant
It has no effect
