Bond Enthalpies Flashcards
1
Q
What is mean bond enthalpy
A
Enthalpy change when one mole of bonds is broken in the gas phase- averaged over several compounds as exact value varies in different compounds
2
Q
How to calculate enthalpy change
A
Energy required to break bonds - energy released by making bonds
3
Q
Why standard enthalpy change and bond energies different
A
Standard enthalpy change refers to compounds in their standard state while bond energies are calculated in their gaseous state
