U3-3-4 - Bond Enthalpy Flashcards
Part of the Chemical Energy topic from Unit 3 of Higher Chemistry, Chemistry in Society
1
Q
The energy required to break one mole of bonds in a diatomic molecule
A
Bond enthalpy
2
Q
The average energy required to break one mole of bonds, for a bond that occurs in a number of compounds.
A
Mean bond enthalpy
3
Q
Is bond breaking endothermic or exothermic?
A
Endothermic
positive sign
bonds are stable, breaking them needs an input of energy
4
Q
Is bond forming endothermic or exothermic?
A
Exothermic
negative sign
5
Q
Mean bond enthalpy
A
The average energy required to break one mole of bonds, for a bond that occurs in a number of compounds.
6
Q
Bond enthalpy
A
The energy required to break one mole of bonds in a diatomic molecule
