WorksheetsS.T.A.R.T: Chemical Catalytic Reaction
Total questions: 10
Worksheet time: 5mins
KNOWLEDGE CHECK: SHOW WHAT YOU KNOW!
Which of the following is true about a catalyst?
(A) It speeds up a chemical reaction without being consumed.
(B) It decreases the activation energy of a reaction.
(C) It alters the equilibrium of the reaction.
(D) Both A and B.
KNOWLEDGE CHECK: SHOW WHAT YOU KNOW
Which of the following factors is most important when selecting a catalyst for a chemical reaction?
(A) The color of the catalyst.
(B) The catalyst’s ability to increase the reaction rate without being consumed.
(C) The size of the catalyst particles.
(D) The cost of the catalyst.
KNOWLEDGE CHECK: SHOW WHAT YOU KNOW
Which of the following statements is the best describes the key difference between homogeneous and heterogeneous catalytic reactions?
(A) Homogeneous catalysts operate in the same phase as the reactants, while heterogeneous catalysts operate in a different phase from the reactants.
(B) Homogeneous catalysts are solid, while heterogeneous catalysts are liquid.
(C) Homogeneous catalysts are less efficient than heterogeneous catalysts.
(D) Homogeneous reactions do not involve catalysts, while heterogeneous reactions do.
KNOWLEDGE CHECK: SHOW WHAT YOU KNOW
Which of the following attributes is most important when selecting a catalyst for a specific chemical reaction?
(A) The catalyst’s selectivity for the desired product.
(B) The catalyst’s ability to change the color of the reactants.
(C) The size of the catalyst’s container.
(D) The availability of the catalyst in large quantities.
BRAIN TEASERS: WHAT'S YOUR BEST GUESS?
Increasing the temperature of a catalytic reaction always increases the reaction rate.
True
False
BRAIN TEASERS: WHAT'S YOUR BEST GUESS?
Which of the following is correctly lists all the steps involved in a typical heterogeneous catalytic reaction?
(A) Diffusion, Adsorption, Desorption
(B) Adsorption, Surface Reaction, Desorption
(C) Adsorption, Surface Reaction, Diffusion
D) Surface Reaction, Desorption, Diffusion
BRAIN TEASERS: WHAT'S YOUR BEST GUESS?
Which of the following steps do you think that is usually the rate-limiting step in a heterogeneous catalytic reaction?
(A) Adsorption of reactants
(B) Surface reaction
(C) Desorption of products
(D) Diffusion of reactants to the surface
BRAIN TEASERS: WHAT'S YOUR BEST GUESS?
Why is it important to understand the Langmuir-Hinshelwood mechanism in heterogeneous catalysis?
(A) It helps explain the rate-determining step in reactions involving both adsorption and surface reactions.
(B) It describes the relationship between pressure and the volume of gases in a reaction.
(C) It helps predict the color changes in catalysts during reactions.
(D) It explains how homogeneous reactions occur in a liquid phase.
BRAIN TEASERS: WHAT'S YOUR BEST GUESS?
How does the Langmuir-Hinshelwood mechanism assist in the application of chemical engineering processes in industry?
(A) It allows engineers to predict and control the rates of surface-catalyzed reactions by understanding how reactants adsorb, react, and desorb on a catalyst.
(B) It helps determine the structural composition of catalysts used in homogeneous reactions.
(C) It provides guidelines for minimizing energy consumption in chemical plants by regulating pressure and temperature.
(D) It focuses on the design of reactors that operate without any form of catalysis.
BRAIN TEASERS: WHAT'S YOUR BEST GUESS?
Which of the following is a common cause of catalyst deactivation in industrial chemical processes?
(A) Excessive catalyst surface area.
(B) Sintering of catalyst particles due to high temperatures.
(C) Use of too much catalyst in the reactor.
(D) Overuse of reactants in the chemical process.
