chemical energies Flashcards
1
Q
what is the change in enthalpy ?
A
the energy released or energy absorbed during the reaction.
2
Q
combustion reactions are always…
A
exothermic, thus, negative.
3
Q
what is the enthalpy of combustion ?
A
the enthalpy change when one mole of a substance burns completely in oxygen.
4
Q
what is the molar bond enthalpy ?
A
the energy required to break one mole of bonds in a diatomic molecule.
5
Q
what is the mean molar bond enthalpy ?
A
the average energy required to break one mole of bonds, for a bond that occurs in a number of compounds ?
