Question

An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:
(a) secondary alcohol by $S_N1$
(b) tertiary alcohol by $S_N1$
(c) secondary alcohol by $S_N2$
(d) tertiary alcohol by $S_N2$

Answer 1

(b) Tertiary Alcohol By S n^1-Reaction mechanism. This is due to the steric hindrance of the 3 bulky alkyl group In Tertiary Alcohol.