What is the activation energy and when does it occur

Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.Starts at the energy of the reactants;The higher the activation energy, the more energy is required for a.Rate of reaction is determined by the number of collisions that occur, and how effective they are.Activation energy is the amount of energy that should be gained by potential reactants, for a reaction to occur.

It is the height of the potential energy barrier between the potential energy minima of the reactants and products.To have a negative value of activation could simply mean the reaction will be too fast to be control.Without enough energy, the reaction won't occur.Anyone who has ever lit fire has an instinctive awareness of the process, even if they have not linked it to chemistry.This is possible due to a release of energy that occurs when the substrate binds to the active site of a catalyst.

You probably remember from chm1045 endothermic and exothermic reactions:While the concept as used by scientists is complex, we can use.Look at the reaction of hydrogen and oxygen forming water.Activation energy is denoted by the unit kl/mol or kcal/mol.In other words, it is the energy barrier that must be overcome so that the reactants can be converted into products.

More you can think of activation energy as a hill that the reaction must climb up before it goes back down to completion.What defines activation energy is the sign ea.Activation energy is the energy needed to initiate a chemical reaction between reactants that are present.