Question

If 2-fluoropentane could undergo an e1 reaction, would you expect the major product to be the more stable alkene or the less stable alkene? explain your answer.

Answer 1

There are two products of 2-fluoropentane E₁ reaction: 1-pentene (minor product) and 2-pentene (major product). 2-pentene is major product and more stable because he is most substituted product  (Zaitsev's rule).
Zaitsev's rule is an empirical rule for predicting the favored alkene product in elimination reactions.