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Which statement is true of an activated complex formed during a chemical reaction?



It contains all the atoms of the reactant particles.


It is a stable collection of reactant atoms.


It is only formed in the forward direction.


It exists along with product molecules at the end of the reaction.

Verified Answer :

taskmasters

I think the correct answer among the choices presented above is the third option. An activated complex formed during a chemical reaction is  only formed in the forward direction. It is a temporary unstable compound formed when the activation energy of a reaction is attained.

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Answer:

It is only formed in the forward direction.

Explanation:

Activated complex is formed by the combination of reactant molecules. Activated complex is formed only in the forward reaction and not in the backward reaction. Option C is correct.

It has the highest energy in the potential energy diagram. Activated complex is known as the transition state and does not include any product molecules. Option D is incorrect.

Option A is incorrect as an activated complex may contain most if not all of the atoms of a reactant particle.


Option B is incorrect as an activated complex is only a transitions state which is unstable and it changes to form products which are more stable.

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