🤓 Based on our data, we think this question is relevant for Professor McDaniel's class at UMASS.
Why would the concentrated hydrobromic acid be an inappropriate catalyst for the dehydration of alcohols?
a) HBr is too weakly acidic to protonate the alcohol.
b) The conjugate base, Br - , is a good nucleophile and it would attack the carbocation to form an alkyl bromide.
c) HBr is strongly acidic, so the water molecule would not be a good leaving group after protonation of the alcohol.
d) HBr would be more likely to promote rearrangement of the carbocation intermediate.