COMEDK · Chemistry · 25. Haloalkanes and Haloarenes

In a set of reactions, bromoethane yielded a final product 'S'.

The compound 'S' should be

A Propane-1, 3-dioic acid
B Pentane-1, 5-dioic acid
C Prop-2-enoicacid
D Butane-1, 4-dioic acid

Verified Solution

Answer & Solution

Correct Answer

(D) Butane-1, 4-dioic acid

Step-by-step Solution

Detailed explanation

Bromoethane (\(CH_{3}CH_{2}Br\)) reacts with alcoholic \(KOH\) to undergo dehydrohalogenation, forming ethene (\(P = CH_{2}=CH_{2}\)). Ethene reacts with \(Br_{2}/CCl_{4}\) to undergo electrophilic addition, forming 1,2-dibromoethane (\(Q = BrCH_{2}CH_{2}Br\)). 1,2-dibromoethane…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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In a set of reactions, bromoethane yielded a final product 'S'.The compound 'S' should be

Step-by-step Solution

In a set of reactions, bromoethane yielded a final product 'S'.

The compound 'S' should be