Q47 / 180 · COMEDK 2014 · Chemistry

The reaction, $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{I}+\mathrm{KOH}(a q) \longrightarrow$ $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}+\mathrm{KI}$ is classified as

  • A
    electrophilic substitution
  • Correct answer
    B
    nucleophilic substitution
  • C
    electrophilic addition
  • D
    nucleophilic addition

Solution

Alkyl halides are hydrolysed to corresponding alcohols by boiling with aqueous alkali solution ( $\mathrm{NaOH}$ or $\mathrm{KOH}$ ). $$ \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{I}+\mathrm{KOH} \longrightarrow \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}+\mathrm{KI} $$ This is nucleophilic substitution reaction in which the attacking nucleophile is $\mathrm{OH}^{-}$.

Hence, the correct answer is option: 'B'.

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