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What is activation barrier?

Updated: 4/28/2022
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11y ago

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The question is this "what is an energy barrier?"

My answer: First of all, activation energy is energy that is needed to start a reaction and barrier means to block so then energy barrier means to block energy.

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11y ago
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Q: What is activation barrier?
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Related questions

What do we call the barrier to a chemical reaction?

The Activation Energy.


What is another name for the activation energy barrier in a reaction?

needed energy


What term is used to describe the minimum amount of energy required in order for a reaction to proceed?

This energy is called "energy of activation", it is used to overcame the energy barrier between reactants and products.


Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's?

activation energy


Use an Arrhenius plot to determine the activation barrier for the reaction?

You have to have data in order to find Ea.


Activation energy barriers?

The activation energy is the amount of energy needed to start a reaction. If the reactants have less than that amount the reaction will not occur. In this way it acts as a barrier that prevents a reaction unless there is enough energy to break it.


What is the function of the blood-testis barrier?

to prevent activation of the immune system of the male against the developing sperm


What type of energy starts a reaction to overcome an energy barrier between reactants and products?

Activation energy


Why is the barrier of the energy of activation beneficial for organic molecules?

Energy is stored in the chemical bonds of organic molecules. The barrier of EA prevents these molecules from spontaneously breaking down and releasing that energy.


How does a chemical reaction starts?

A reaction occurs when 2 particles collide with sufficient energy to overcome the activation barrier and then react.


Is activation energy for thermal and photochemical reactions same?

The definition of the activation energy is exactly the same -- the thermodynamic energy barrier that the reactant must pass over to convert to products. The difference between a thermal and a photochemical reaction is only where the reactants get the energy to get over this barrier. In a thermal reaction, that energy is given by the temperature, and is carried in excited rotational modes, higher kinetic energies and if hot enough, excited vibrational states. In a photochemical reaction, the activation energy is provided by photons, usually in the form of electronic excited states, but could also be vibrational or rotational. The concept of the activation barrier is identical in both cases.


Is Activation energy the minimum energy needed for a reaction to start?

No, the opposite. The lower the activation barrier the faster the reaction goes. That is how a catalyst speeds up the reaction: by lowering the activation energy.See the Web Links for more information.