Applying Concepts These questions test conceptual learning. When we estimate Delta;H°...

Applying Concepts

These questions test conceptual learning.

When we estimate Delta;H° from bond enthalpies we assume that all bonds of the same type (single, double, triple) between the same two atoms have the same energy, regardless of the molecule in which they occur. The purpose of this problem is to show you that this is only an approximation. You will need these standard enthalpies of formation:

For each of the reactions in part (c), draw a diagram similar to Figure 8.4. Then, calculate the average C-H bond energy in CH₃, CH₂, and CH. Comment on any trends you see.

Figure 8.4