+1-315-636-4485
+91 98151-74050 
This quiz contains multiple-choice problems on liquid and gas phase reactions, theories' comparison and ideal reactor types.
For an endothermic reaction, the average energy of products is
Equal to the average energy of reactants
Lower than or equal to the average energy of reactants
Lower than the average energy of reactants
Greater than the average energy of reactants
Collision theory states that
Molecules do not collide during the reaction
Reactant molecules collide to effect product formation
Reactants form complexes
Products formed are unstable
Transition state theory shows no equilibrium exists between activated, complex, and reacting molecules at any time. True or false?
True
False
Transition state theory postulates that reacting molecules form unstable intermediates that decompose into products. True or false?
True
False
Which of the following is incorrect regarding transition state theory?
It is based on statistical mechanics
The formation of activated complex to be rapid
The decomposition of activated complex is slow
The formation of activated complex is the rate determining step
The minimum energy required by the reactants to affect the product formation is termed as
Threshold energy
Potential energy
Activation energy
Kinetic energy
Which of the following is true for a reaction occurring in a batch reactor?
Which one of the following combinations gives the highest conversion for a second-order reaction?
PFR followed by smaller CSTR followed by a bigger CSTR
PFR followed by bigger CSTR followed by a bigger CSTR
Smaller CSTR followed by PFR followed by a bigger CSTR
Bigger CSTR followed by a PFR followed by smaller CSTR
The average concentration of product is low inside a CSTR. True or false?
True
False
The equation representing the variation of rate constant with respect to temperature by the Arrhenius equation is
ln(k{2}/k{1}) = (E/R)*((1/T{1}) - (1/T{2}))
ln(k{2}/k{1}) = (E/R)*((1/T{2}) - (1/T{1}))
ln(k{2}/k{1}) = (E/R)*((1/T{1}) + (1/T{2}))
ln(k{2}/k{1}) = – ((E/R)*((1/T{2}) + (1/T{1})))
The performance equation of a PFR is
F{A{0}}/dV = -dX{A}/r{A}
dV/F{A{0}} = -r{A}/dX{A)
F{A{0}}/dV = -r{A}/dX{A)
F{A{0}}/dX{A} = -r{A}/dV
If kB is Boltzmann constant and h is Plank’s constant, the rate of decomposition of complex formed during product formation, as given by transition state theory, is
k{B}T/h
k{B}h/T
k{B}T/(2*h)
k{B}T^2/h
If C{A} is the final concentration and C{A{0}} is the initial concentration, the conversion of a reaction is expressed as
(C{A{0}} - C{A})/C{A{0}}
- V * (C{A{0}} - C{A})/r{A})
- (C{A{0}} - C{A})/r{A}*V)
C{A}/C{A{0}}
The temperature dependency of rate constant as given by collision theory is
k α T
k α T^2
k α T^3
k α T^(0.5)
The temperature dependency of rate constant as given by transition state theory is
k α T
k α T^2
k α T^3
k α T^(0.5)
