Bond Enthalpy versus standard Enthalpies of formation

[Teresa Chan 2G]

How do we distinguish between when to use bond Enthalpy or standard Enthalpy?

[Angela_Pu_3C]

Based on the textbook problems Lavelle assigned, the problem may tell you which method it wants you to use. If not, I'm p sure that you'll be provided w certain info (aka standard enthalpies of formation or bond enthalpies) which will push you towards using a certain method, and you'll solve the problem accordingly.

[Cris-1C]

I believe the textbook problems do specifically state which method to use, in which the manner that each problem is presented in also seems to lend itself to using a certain method. However, if I do remember correctly, Lavelle did mention that sometimes a problem has some sort of freedom in terms of choosing how to approach it. If anything, I am sure future quizzes and exams will either specifically state which method to use or the fact that we are free to choose any.