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What is the order of reactivity of alcohols toward a given halogen acid?

A1° > 2° > 3°
B3° > 1° > 2°
C3° > 2° > 1°
D2° > 1° > 3°
Answer & Solution
Correct answer: C. 3° > 2° > 1°
Tertiary alcohols give the most stable carbocation-like intermediate, so they react fastest with haloacids.
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