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Solution: The heats of reaction were measured for addition of HBr to c...

Question

The heats of reaction were measured for addition of HBr to cis- and trans-2-butene.

Use these data to calculate the energy difference between cis- and trans-2-butene. How does this energy difference compare to that based on heats of hydrogenation (Section 6.3) and heats of combustion (Section 5.6)?