11 grade chemistry others
Which of the following is not a Lewis acid?
- A. BF₃
- B. AlCl₃
- C. FeCl₃
- D. PH₃
Which of the following is not a Lewis acid?
- A. BF₃
- B. AlCl₃
- C. FeCl₃
- D. PH₃
1 Answer
Askiitians Tutor Team
Approved Tutor Answer10 Months agoTo determine which of the options is not a Lewis acid, let's first define what a Lewis acid is. A Lewis acid is a substance that can accept an electron pair from a Lewis base during a chemical reaction.
Analyzing the Options
- BF₃ (Boron Trifluoride): This is a well-known Lewis acid because it can accept electron pairs due to the electron deficiency of boron.
- AlCl₃ (Aluminum Chloride): This compound also acts as a Lewis acid, as aluminum can accept electron pairs.
- FeCl₃ (Iron(III) Chloride): Iron(III) chloride is another Lewis acid, capable of accepting electrons.
- PH₃ (Phosphine): Unlike the others, phosphine does not have a tendency to accept electron pairs and is not classified as a Lewis acid.
Final Answer
Therefore, the correct answer is PH₃, as it is not a Lewis acid.
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