Predict the product(s) of the following reaction.

Question

Quizplus · Accepted Answer

The given reaction involves the Williamson ether synthesis, where an alkoxide ion acts as a nucleophile and attacks an alkyl halide to form an ether. 
In the first step, potassium ethoxide (I) reacts with 1-bromobutane (II) to form butyl ethyl ether (III) and potassium bromide (IV). 
In the second step, butyl ethyl ether (III) does not react further as it is already an ether and cannot act as a nucleophile to attack another alkyl halide. Therefore, the only products are butyl ethyl ether (III) and potassium bromide (IV). 
Hence, the correct choice is A.

Predict the Product(s) of the Following Reaction