The alphabet for each arrow in the diagram given above is correctly placed in a picture attached.
What is activation energy?
Activation energy is defined as the energy that must be overcome for a chemical reaction to take place.
Activation energy can include the following types:
- Catalysed activation energy and
- Uncatalysed activation energy.
In the catalysed activation energy, A catalyst increases the rate of reaction by decreasing the activation energy. That is why the arrow which represents A is a catalysed activation energy
In the uncatalysed activation energy, there is absence of catalyst which leads to the decrease of reaction by increasing the activation energy. That is why the arrow which represents B is an uncatalysed activation energy.
Learn more about activation energy here:
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