Bond enthalpies Flashcards
1
Q
Bond energy
A
The amount of energy needed to break a bond in the gaseous state.
2
Q
Bond dissociation energy
A
The energy required - an endothermic process - to break a bond and form two atomic or molecular fragments, each with one electron of the original shared pair.
3
Q
Mean bond energy
A
The enthalpy to break one mole of named bonds
Averaged over a range of compounds/molecules
In the gaseous state (3)
4
Q
Equation using average bond enthalpies: ΔH=
A
energy to break all bonds - energy to make all bonds
