Bond Enthalpy (Leaving Cert Chemistry): Flashcards
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Definition of bond enthalpy
Definition of bond enthalpy
Avg. energy to break 1 mole of a covalent bond
Other name for bond enthalpy
Other name for bond enthalpy
Bond dissociation enthalpy
Why bond enthalpies are average values
Why bond enthalpies are average values
Bond strength varies depending on the molecule
Is bond breaking endo- or exothermic?
Is bond breaking endo- or exothermic?
Endothermic - requires energy
Is bond forming endo- or exothermic?
Is bond forming endo- or exothermic?
Exothermic - releases energy
Relative bond strength: triple, double, single
Relative bond strength: triple, double, single
Triple strongest, then double, then single
calculation formula
calculation formula
Energy breaking bonds - energy forming bonds
Negative means
Negative means
Exothermic reaction
Positive means
Positive means
Endothermic reaction
Exothermic reaction (bond energy definition)
Exothermic reaction (bond energy definition)
More energy released forming than used breaking bonds
Endothermic reaction (bond energy definition)
Endothermic reaction (bond energy definition)
More energy used breaking than released forming bonds