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.


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