a) When HCL is added to 1,3-butadiene either 3-chloro-1-butene or 1-chloro-2-butene forms. Which product is more stable and EXPLAIN

b) EXPLAIN why at low temperatures, e.g. -80 °C, when HCl is added to 1,3-butadiene the major product is 3-chloro-1-butene.

c) EXPLAIN why at +80 °C when HCl is added to 1,3-butediene the major product is 1-chloro-2-butene.

d) 3-chloro-1-butene is converted to 1-chloro-2-butene at +80 °C, i.e. give the mechanism for the conversion. (Note AlCl3 can be used to catalyze the conversion).