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sgstudent
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Is the energy required to break the bonds of a compound in order for the reaction to occur (bond energy) the same as activation energy? Thanks for the help!
Borek said:Do you need to break the bonds entirely to reach the transition state?
Borek said:What is a transition state?
I think you are picturing a process like this:sgstudent said:I think so, when we do the calculating it is enthalpy to break bonds+enthalpy to form bonds.
Gokul43201 said:I think you are picturing a process like this:
reactants --> (bond breaking) --> transition state = individual species with all relevant bonds broken --> (bond formation) --> products
But does it have to follow that sequence?
sgstudent said:then the part that scares me is on finding the activation energy
Borek said:Experimentally, or through QM only, you can't find it from typical thermodynamic data. And this is nothing unusual. Or perhaps I should put it differently - it is rather unusual to be able to calculate activation energy just from the thermodynamical data describing bond energies.
Bond energy is the amount of energy required to break a chemical bond between two atoms. This energy is often used as a measure of the strength of a bond. In chemical reactions, bonds are broken and formed, and the difference in bond energies between the reactants and products determines the overall energy change of the reaction.
While bond energy is the energy required to break a bond, activation energy is the minimum amount of energy needed to start a chemical reaction. In other words, bond energy is a property of a specific bond, while activation energy is a property of a chemical reaction.
The higher the bond energy, the stronger the bond and the more energy is required to break it. This means that reactions involving strong bonds will have higher activation energies and will proceed at a slower rate compared to reactions involving weaker bonds.
Yes, both bond energy and activation energy can be measured experimentally using various techniques such as calorimetry and spectroscopy. These measurements can provide valuable information about the nature and strength of chemical bonds and the energy changes involved in chemical reactions.
Bond energy can be altered by changing the types of atoms involved in a bond, such as using different elements or substituting functional groups. Activation energy, on the other hand, can be altered by changing reaction conditions such as temperature, pressure, and the presence of catalysts. These changes can affect the rate and outcome of a chemical reaction.