Activation Energy Formula

Activation Energy Formula

Information pertaining to the Activation Energy Formula is available on the Extramarks learning portal. The term Activation Energy Formula refers to the least amount of energy required to activate atoms or molecules into a state that allows them to perform a chemical reaction or physical transport.

As a result, it is in a configuration of activation or transition-state while the associated atoms and molecules remain in their initial configuration. This is referred to as the Activation Energy Formula content differential between molecules and atoms.

The size of the potential barrier between the minima of the potential energy surface and the ultimate thermodynamic state can be thought of as the Activation Energy Formula. Additionally, it is the bare minimum of energy that a system needs to have to allow molecules to react and produce the desired results.

Formula of Activation Energy

Kilojoules per mole (kJmol) or the International System Unit of energy Joule (J) are used to measure activation energy. Additionally, the Activation Energy Formula can be measured in kilocalories per mole, or kcal.mol 1.

Every reaction has a potential barrier or minimal energy, in accordance with the activation energy theory. Additionally, for Activation Energy Formula reaction to occur, the molecules need to be able to stretch, bend, or break bonds. As a result, this makes it easier for the reaction’s products to form.

Solved Examples

Below are a few examples of the Activation Energy Formula:

  1. Determine the activation energy while keeping in mind that k = 2.75 102 Lmol 1s 1, T = 400 K. The pre-exponential factor in this case is 20M 1 s 1.

Answer: k = InA-EaRT1(InAInk)RT = Ea

R is a gas constant with a value of 8.314 J/molK; as a result

(In 20 M−1s−1−In2.75×10−2 MOL−1s−1)8.314J/molK400k = Ea

Ea equals 21.91 kJ/mol

The activation energy is therefore 21.91 kJ/mol.

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