Catalyst
A catalyst increases the rate of reaction by:
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About This Question
- Subject
- chemistry
- Chapter
- chemical kinetics
- Topic
- catalyst
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Decreasing activation energy
A Catalyst is a substance that increases the reaction rate without being consumed.
- It functions by providing an alternative reaction mechanism with a significantly lower activation energy (Ea).
- Lower Ea means a larger fraction of reactant molecules possess sufficient kinetic energy to overcome the potential energy barrier.
- Note: A catalyst increases both forward and backward rates equally, so it does not change the equilibrium position or the equilibrium constant (Keq).
This easy difficulty chemistry question is from the chapter chemical kinetics, covering the topic of catalyst. It appeared in the 2025 exam.
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