Each catalyst has_________________?
Correct answer: D. all of above
- A. Specificity
- B. Special structure
- C. Its own Ea
- D. all of above
Explanation
A catalyst has a particular structure and active surface, so it is selective or specific toward certain reactions, and it provides its own alternative activation-energy pathway. Students may choose c because activation energy is the key kinetic idea, but specificity and structure are also characteristic properties of a catalyst.
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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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