A catalyst can not effect__________________?
Correct answer: D. both A & B Chemistry
- A. Products
- B. Chemical equilibrium
- C. Reactants
- D. both A & B Chemistry
Explanation
A catalyst changes the rates of the forward and reverse reactions but does not change the final equilibrium composition or the nature of the products formed. Therefore it affects neither the products in the sense of changing what is formed nor the equilibrium position; students may choose only b because the equilibrium effect is the most commonly stated part.
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About Factors Affecting Rate of Reaction
Reaction rate depends on the nature and concentration of reactants, pressure for gases, temperature, surface area and catalysts. Collision theory explains these effects through collision frequency, orientation and activation energy, while questions often distinguish a catalyst's effect on reaction rate from its lack of effect on equilibrium composition.
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