The heat of hydrogenation of
Chapter 6, Problem 6.43(choose chapter or problem)
The heat of hydrogenation of cis-2,2,5,5-tetramethyl-3-hexene is 2154 kJ (236.7 kcal)/ mol, while that of the trans isomer is only 2113 kJ (226.9 kcal)/mol. (a) Why is the heat of hydrogenation of the cis isomer so much larger (more negative) than that of the trans isomer? (b) If a catalyst could be found that allowed equilibration of the cis and trans isomers at room temperature (such catalysts do exist), what would be the ratio of trans to cis isomers?
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