Anything which increases rate of reaction without being involved in the reaction________________?
Correct answer: B. Catalyst
- A. Promoter
- B. Catalyst
- C. Inhibitor
- D. All of the above
Explanation
A catalyst increases reaction rate by providing an alternative pathway with lower activation energy and is regenerated by the end of the reaction. It participates in the mechanism but is not permanently consumed. Students may choose a because a promoter can enhance a catalyst, but a promoter is not the general name for a substance that directly catalyses the reaction.
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About Activation Energy and Activated Complex
Activation energy is the minimum energy reactant particles need to form the activated complex, or transition state, during a reaction. Energy profile diagrams show the forward and reverse activation energies, while catalysts provide an alternative pathway with lower activation energy without changing the reaction enthalpy.
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More Activation Energy and Activated Complex questions
The addition of a catalyst to the reaction system__________________?
Activated complex is formed due to________________?
Energy required to form transition state is called _________________?
The minimum energy below which no reaction occur in reactant molecules is:
Reaction intermediate:
It is experimentally found that a catalyst is used to: