What is activation energy? a. The thermal energy associated...

What is activation energy?
a. The thermal energy associated with random movements of molecules
b. The energy released through breaking chemical bonds
c. The difference in free energy between reactants and products
d. The energy required to initiate a chemical reaction

Key Concepts

Activation Energy

Activation energy is the minimum amount of energy required for reactants to transform into products in a chemical reaction. It represents the energy barrier that must be overcome for the reaction to proceed and is a key factor in determining the reaction rate.

Energy Barrier

The energy barrier is the conceptual and graphical representation of the energy peak that separates reactants from products on a reaction coordinate diagram. It is the hurdle that the system must surmount for a chemical reaction to occur and is directly related to the activation energy.

Chemical Kinetics

Chemical kinetics is the branch of chemistry that studies the rates of chemical reactions, including how various factors such as activation energy, temperature, and reactant concentrations influence the speed at which reactions proceed. Understanding activation energy is essential in this field as it affects the frequency and success of molecular collisions leading to a reaction.

Transcript

00:05 So this question deals with what properties are associated with activation energy? easily, this is just really a definitional type question.

00:19 And we can just look at the definition, but we can also eliminate some of our choices.

00:25 One of the first questions is asking about whether or not, or the choices, i guess, is asking whether or not it's about thermal energy, whether activation, activation energy is thermal energy.

00:39 Thermal energy is basically heat.

00:41 And so while heat could be added to get the reaction to go in order to get it activated or get initiated, thermal energy is just all it is heat.

00:54 And activation energy can be a number of different kinds.

00:57 So this one would be one that we would eliminate immediately out of the choices.

01:03 And that's, i think it says here.

01:05 Also, it says as another choice, having energy released.

01:13 Energy released is exactly opposite of what activation energy is even all about.

01:19 It have to have an initial amount of energy to get the whole thing started for the reaction to even take place, even for a spontaneous one.

01:30 And so on this, we can eliminate these two choices right away.

01:36 So there was another choice, and this choice was dealing with energy of the chemical reaction.

01:43 It was asking about the differences between on your input or your output, differences between your energy of your reactants and your products...

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