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Which of the following is a Lewis acid but not a Brønsted-Lowry acid? 20 Multiple Choice CH3OH O H20 CH3COOH BF3

Which of the following is a Lewis acid but not a Brønsted-Lowry acid? 20 Multiple Choice CH3OH O H20 CH3COOH BF3

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Question 20** **Which of the following is a Lewis acid but not a Brønsted-Lowry acid?** *Multiple Choice Options:* - ○ CH₃OH - ○ H₂O - ○ CH₃COOH - ○ BF₃ **Explanation:** This question tests your understanding of the differences between Lewis acids and Brønsted-Lowry acids. A Lewis acid is a compound that can accept an electron pair, while a Brønsted-Lowry acid is a compound that can donate a proton (H⁺). **Options Analysis:** - **CH₃OH (Methanol):** Acts primarily as neither a distinct Lewis acid nor a Brønsted-Lowry acid in this context. - **H₂O (Water):** Typically acts as a base or an acid in a Brønsted-Lowry sense, accepting or donating protons. - **CH₃COOH (Acetic acid):** Known as a Brønsted-Lowry acid, it donates protons. - **BF₃ (Boron trifluoride):** This is a classic Lewis acid, as it can accept an electron pair due to the empty p-orbital on boron. It does not act as a Brønsted-Lowry acid since it does not donate protons. **Correct Answer: BF₃**
Transcribed Image Text:**Question 20** **Which of the following is a Lewis acid but not a Brønsted-Lowry acid?** *Multiple Choice Options:* - ○ CH₃OH - ○ H₂O - ○ CH₃COOH - ○ BF₃ **Explanation:** This question tests your understanding of the differences between Lewis acids and Brønsted-Lowry acids. A Lewis acid is a compound that can accept an electron pair, while a Brønsted-Lowry acid is a compound that can donate a proton (H⁺). **Options Analysis:** - **CH₃OH (Methanol):** Acts primarily as neither a distinct Lewis acid nor a Brønsted-Lowry acid in this context. - **H₂O (Water):** Typically acts as a base or an acid in a Brønsted-Lowry sense, accepting or donating protons. - **CH₃COOH (Acetic acid):** Known as a Brønsted-Lowry acid, it donates protons. - **BF₃ (Boron trifluoride):** This is a classic Lewis acid, as it can accept an electron pair due to the empty p-orbital on boron. It does not act as a Brønsted-Lowry acid since it does not donate protons. **Correct Answer: BF₃**
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