Question

Y does lucas reagent form a precipitate when treated with tertiary alcohols

Answer 1

Lucas reagaent forms alkyl halide on treating with alcohol. The reaction follows SN1 mechanism, and a carbocation intermediate is formed, the stability of which determines the rate of the reaction. 

Answer 2

He reagent's form alkyd halide to treating himself with alcohol. The reaction follows SN 1 mechanism, and a carbocation intermediate is formed, the stability of which determines the rate of the reaction.