Lewis acids are defined as:

A Proton donors

B Electron pair acceptors

C Proton acceptors

D Electron pair donors

✓ Correct Answer: Option B

Lewis acid = electron pair acceptor. Lewis base = electron pair donor. Broader than Brønsted definition.

💡 Why is B) the correct answer?

The correct answer to the question "Lewis acids are defined as:" is Option B: Electron pair acceptors.

The other options — A) Proton donors, C) Proton acceptors, D) Electron pair donors — are incorrect for this PCAT Exam Prep question. As explained above: Lewis acid = electron pair acceptor. Lewis base = electron pair donor. Broader than Brønsted definition.

📚 About This PCAT Exam Prep Practice Question

This 2-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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Lewis acids are defined as:

✓ Correct Answer: Option B

📚 About This PCAT Exam Prep Practice Question

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