Catalysts in Chemical Reactions
Chemistry ⇒ Chemical Reactions and Equations
Catalysts in Chemical Reactions starts at 9 and continues till grade 12.
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Describe how a catalyst affects the activation energy of a reaction.
Describe the effect of a catalyst on the rate constant (k) of a reaction.
Describe the effect of increasing the surface area of a solid catalyst on the rate of reaction.
Describe the role of a catalyst in reversible reactions.
Describe the role of a catalyst in the decomposition of hydrogen peroxide.
Explain the difference between a homogeneous and a heterogeneous catalyst.
Explain the term 'catalyst poison' and give an example.
Explain why a catalyst does not affect the equilibrium constant of a reaction.
Which of the following is a characteristic of an enzyme-catalyzed reaction?
(1) High temperature stability
(2) High specificity
(3) Works in all pH ranges
(4) Non-selective action
Which of the following is a heterogeneous catalyst?
(1) Acid in esterification
(2) Platinum in hydrogenation of alkenes
(3) Enzyme in digestion
(4) Cobalt ion in vitamin B12 reactions
Which of the following is an example of a biological catalyst?
(1) Platinum
(2) Enzyme
(3) Iron(III) oxide
(4) Nickel
Which of the following is an example of a homogeneous catalyst?
(1) Iron in Haber process
(2) Sulfuric acid in esterification
(3) Platinum in hydrogenation
(4) Vanadium(V) oxide in contact process
Fill in the blank: In the Haber process, the catalyst used is __________.
Fill in the blank: The catalyst used in the contact process for the manufacture of sulfuric acid is __________.
Fill in the blank: The catalyst used in the decomposition of hydrogen peroxide is __________.
Fill in the blank: The catalyst used in the Ostwald process for the manufacture of nitric acid is __________.
True or False: Catalysts alter the position of equilibrium in a chemical reaction.
True or False: Catalysts are always required in stoichiometric amounts.
True or False: Catalysts are always solids.
True or False: Catalysts are used in both organic and inorganic reactions.
