dissociation enthalpy
Answers
Bond dissociation enthalpy can be defined as the standard change in enthalpy when a bond is cleaved via homolytic fission. The products formed from the homolysis of the bond are generally radicals.
What is Bond Dissociation Enthalpy?
The strength of the chemical bond between any two species can be estimated with the help of bond dissociation enthalpy. Although it is generally measured as the enthalpy change at standard conditions (298K), the bond dissociation energy of a chemical bond is often defined as the enthalpy change of the homolytic fission of the bond at absolute zero (0K).
Some important features of the concept of bond dissociation enthalpy include:
⏏It is the amount of energy which needs to be supplied in order to break a chemical bond between two species.
⏏It is a means of calculating the strength of a chemical bond.
⏏In diatomic molecules specifically, it is equal to the value of bond energy
⏏The bond between silicon and fluorine is said to have the strongest bond dissociation enthalpy.
⏏Covalent bonds between atoms or molecules are said to have weak bond dissociation energies.
Answer:
Bond dissociation enthalpy can be defined as the standard change in enthalpy when a bond is cleaved via homolytic fission. The products formed from the homolysis of the bond are generally radicals.
What is Bond Dissociation Enthalpy?
The strength of the chemical bond between any two species can be estimated with the help of bond dissociation enthalpy. Although it is generally measured as the enthalpy change at standard conditions (298K), the bond dissociation energy of a chemical bond is often defined as the enthalpy change of the homolytic fission of the bond at absolute zero (0K).
Some important features of the concept of bond dissociation enthalpy include:
⏏It is the amount of energy which needs to be supplied in order to break a chemical bond between two species.
⏏It is a means of calculating the strength of a chemical bond.
⏏In diatomic molecules specifically, it is equal to the value of bond energy
⏏The bond between silicon and fluorine is said to have the strongest bond dissociation enthalpy.
⏏Covalent bonds between atoms or molecules are said to have weak bond dissociation energies.