The reaction:
CH3CH2I + KOH (aq) →CH3CH2OH + KI is classified as:
(a) electrophilic substitution
(b) nucleophilic substitution
(c) elimination
(d) addition
Correct option is (a)
CH3CH2I + KOH (aq) →CH3CH2OH + KI
The reaction is an example of nucleopihlic substitution reaction. The hydroxyl group of KOH (OH-) with a lone pair of itself acts as a nucleophile and substitutes iodide ion in CH3CH2I to form ethanol.