The correct reaction profile diagram for a positive catalyst reaction.
Chemical Kinetics · Class 12 · JEE Main Previous Year Question
The correct reaction profile diagram for a positive catalyst reaction.
- a
- b✓
- c
- d
A positive catalyst (or simply a catalyst) lowers the activation energy of the reaction without changing the overall enthalpy change (). Key features:
- The energy of reactants and products remains the same
- The activation energy () is lower with catalyst
- The transition state energy is lower
- of reaction is unchanged
The correct profile shows a lower energy barrier (transition state) compared to the uncatalysed reaction, with the same reactant and product energy levels.
Answer: Option (2)
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