Nucleophilic acyl substitution occurs at:

A Alkyl carbons

B Carbonyl carbons of carboxylic acid derivatives (esters, amides, acid chlorides, anhydrides)

C Aromatic rings

D Triple bonds only

✓ Correct Answer: Option B

Acyl substitution: nucleophile attacks electrophilic carbonyl C → tetrahedral intermediate → leaving group departs. Not SN2.

💡 Why is B) the correct answer?

The correct answer to the question "Nucleophilic acyl substitution occurs at:" is Option B: Carbonyl carbons of carboxylic acid derivatives (esters, amides, acid chlorides, anhydrides).

The other options — A) Alkyl carbons, C) Aromatic rings, D) Triple bonds only — are incorrect for this PCAT Exam Prep question. As explained above: Acyl substitution: nucleophile attacks electrophilic carbonyl C → tetrahedral intermediate → leaving group departs. Not SN2.

📚 About This PCAT Exam Prep Practice Question

This 3-level PCAT Exam Prep question from the Chemical Processes topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free PCAT Exam Prep practice test or use flashcards for spaced repetition review.

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Nucleophilic acyl substitution occurs at:

✓ Correct Answer: Option B

📚 About This PCAT Exam Prep Practice Question

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