Which of the following is strongest Lewis base?
Correct answer: B. Acetylene
- A. Ethylene
- B. Acetylene
- C. Benzene
- D. All have equal strength
Explanation
Acetylene (ethyne) has a triple bond between the carbon atoms, allowing it to donate a pair of electrons more readily compared to ethylene.Therefore, it is the strongest Lewis base among the options given.
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About Bronsted-Lowry and Lewis Concepts
The Brønsted-Lowry concept defines acids as proton donors and bases as proton acceptors, producing conjugate acid-base pairs. The Lewis concept extends the idea to electron-pair acceptors and donors, so compounds such as BF3 and NH3 can be treated as acid and base even without proton transfer, unlike the Arrhenius definition.
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