Question

(ii) What is the correct order of reactivity of the alcohols involving the cleavage of C-OH bond?
a) Methyl alcohol >Ethyl alcohol>Isopropyl alcohol>tertiary butyl alcohol
b) Tertiary alcohol>isopropyl alcohol>ethyl alcohol>methyl alcohol
c) Isopropyl alcohol>tertiary alcohol>ethyl alcohol>methyl alcohol
d) Tertiary alcohol>ethyl alcohol>isopropyl alcohol>methyl alcohol

Answer 1

Answer:

(b) is correct option

Explanation:

order of stability

tertiary> secondary> primary carbocation

Answer 2

• The cleavage of C-OH means the protonation of carbonyl oxygen activates the carbonyl group.
• Acidic character of alcohol follows the order primary>secondary>tertiary.
• Hydroxide is diatomic with anion.
• Alcohols undergo a large number of reactions involving the cleavage of OH bond.
• Hence according to the above conclusion the correct answer is option c.

• Isopropyl alcohol>tertiary alcohol>ethyl alcohol>methyl alcohol.

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