From the first set of "Review Questions" number 8 says, "The greatest amount of energy is required to break which of the following C-C bonds?"
I knew to cancel out choices A and B because double bonds require more energy to break. I then thought the answer was C because if you look at table 1 "H3C-CH3" has a BE of 88 and "H5C2-CH3" has a BE of 85, so I thought by analogy answer D would also have a lower BE. I don't really understand the explanation either because it says, "A lower heat of hydrogenation implies that a reactant alkene molecule is more stable and thus a stronger bond"...Isnt -32.6 lower than -26.4? I don't really remember much about "enthalpy" and but is that necessary to solve this problem?
I knew to cancel out choices A and B because double bonds require more energy to break. I then thought the answer was C because if you look at table 1 "H3C-CH3" has a BE of 88 and "H5C2-CH3" has a BE of 85, so I thought by analogy answer D would also have a lower BE. I don't really understand the explanation either because it says, "A lower heat of hydrogenation implies that a reactant alkene molecule is more stable and thus a stronger bond"...Isnt -32.6 lower than -26.4? I don't really remember much about "enthalpy" and but is that necessary to solve this problem?
