An increase in the concentration of the reactants of a reaction leads to change in

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🧠 The "Aha!" Moment
When you pack more reactant molecules into the same space (increase concentration), they are bound to bump into each other more often. It's like a crowded room—the more people you add, the more "accidental collisions" occur.

🗺️ Evaluating the Options
- (a) Heat of reaction: Determined by the nature of bonds, not how many molecules are present.
- (b) Threshold energy: The minimum energy hurdle. This is a property of the specific bond cleavage needed, not concentration.
- (

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