Which compound would you expect to have the larger negative heat of hydrogenation: 1,2-pentadiene, 1,3-pentadiene or...

Question

Question

Which compound would you expect to have the larger negative heat of hydrogenation: 1,2-pentadiene, 1,3-pentadiene or 1,4-pentadiene? Explain

Answer 1

Answer #1

1,2-pentadiene 1,3-pentadiene 1,4-pentadiene more stable The order of stability is: 1,3-pentadiene > 1,4- pentadiene > 1 ,2-p

Therefore, 1,2-pentadiene will have larger negative heat of hydrogenation.

Answer 2

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