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Why does every chemical reaction require a certain amount of activation energy?

A. Energy is released when the reactants begin to react.
B. Energy lost to the environment during the reaction must be replaced.
C. Forming the activated complex requires energy.
D. The products have more potential energy than the activated complex.
E. The reactants have less potential energy than the products.



Answer :

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Final answer:

Activation energy is crucial for initiating chemical reactions, determining reaction rates, and forming activated complexes.


Explanation:

Activation energy is the energy required to start a chemical reaction. It is essential because reactant molecules need energy to overcome intermolecular forces and collide to initiate the reaction.

The activation energy determines the rate of the reaction; higher activation energy leads to slower reactions. Heat energy from the surroundings is commonly the source of activation energy for chemical reactions.

Activated complex, an unstable arrangement of atoms at the peak of the activation energy barrier, plays a crucial role in determining whether reactants will form products or remain unchanged after collision.


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