Question

Which indicates the energy that must be absorbed to initiate the reaction?

Answer 1

The activation energy.

Step-by-step explanation:

Hello,

In chemical kinetics, the activation energy is defined as the required energy to allow a chemical reaction to be carried out. It is related with the energy content that will induce the atoms or molecules to crash, break the bonds or just become ionized and form the corresponding products based on the type of reaction. It could be represented graphically on the attached picture.

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Answer 2

Answer : The energy that absorbed to initiate the reaction must be, Activation energy.

Explanation :

Activation energy : The energy required to initiate the reaction is known as activation energy.

Or, it is defined as the amount of energy required to reach the transition state.

Or we can say that, It is the minimum amount of energy that is absorbed by the reactant molecules so that their energy becomes equal to the threshold energy.

The activation energy is depends on the catalyst. Catalyst is a type of substance that increase the rate of the reaction.

That means, the activation energy is more in the absence of a catalyst and the activation energy is less in the presence of the catalyst.

Hence, the energy that absorbed to initiate the reaction must be, Activation energy.

The reaction energy diagram are also shown below.