Insert the information in the form and the calculator will determine the activation energy.

What is the activation energy?

The activation energy is the minimum amount of extra energy that is needed by the reacting molecule in order to get the product. In simple words the activation energy refers to the minimum amount of energy required to active molecules so they can undergo a chemical reaction.

How to calculate activation energy?

To calculate activation energy you should use the following formula:
k = A * e^(-Ea / (R * T))
where:
k = rate constant
A = pre-exponential factor
Ea = activation energy
R = universal gas constant which is equal to 8.314
T = absolute temperature in kelvin

Why use activation energy?

The activation energy is used in order to calculate the minimum amount of energy that is required to activate molecules in order for them to undergo a chemical reaction.