The $\Delta$H° value is expected to be least for which indicated C-H bond of isopentane?

Question

Quizplus · Accepted Answer

The F1F1F1S1F1F1F10H° value is related to the strength of the C-H bond, with a weaker bond resulting in a lower value. To find the least F1F1F1S1F1F1F10H° value, we need to identify the C-H bond that is weaker due to the electron-withdrawing effect of nearby functional groups. In isopentane, the C-H bond that is in closest proximity to the functional group (the isopropyl group) is the bond on the carbon marked in choice C. Therefore, choice C is expected to have the least F1F1F1S1F1F1F10H° value.

The Δ\DeltaΔ H° Value Is Expected to Be Least for Which Indicated

The $\Delta$ H° Value Is Expected to Be Least for Which Indicated