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Acidity of BF3can be explained on the basis of which of the following concepts?
- a)Arrhenius concept
- b)Bronsted Lowry concept
- c)Lewis concept
- d)Bronsted Lowry as well as Lewis concept
Correct answer is option 'C'. Can you explain this answer?
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Acidity ofBF3can be explained on the basis of which of the following c...
Sol: (c) According to Lewis concept, a positively charged or an electron deficient species acts as Lewis acid. BF3 is an electron deficient compound with B having 6 electrons only.
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Most Upvoted Answer
Acidity ofBF3can be explained on the basis of which of the following c...
Acidity of BF3 can be explained on the basis of Lewis concept.
Explanation:
The Lewis concept of acids and bases was proposed by Gilbert N. Lewis in 1923. According to this concept, an acid is defined as an electron pair acceptor, while a base is defined as an electron pair donor.
Acidity of BF3:
BF3 is a Lewis acid because it can accept an electron pair from a Lewis base. In BF3, the boron atom is electron deficient and has an incomplete octet. It has only six valence electrons, so it can accept a pair of electrons from a Lewis base to complete its octet.
When BF3 reacts with a Lewis base, such as NH3, the boron atom accepts a lone pair of electrons from the nitrogen atom in NH3. This forms a coordinate covalent bond, also known as a dative bond, between the boron and nitrogen atoms. The resulting species is called an adduct.
BF3 + NH3 → BF3NH3
In this reaction, BF3 acts as an acid because it accepts an electron pair from NH3, which acts as a base. The Lewis base (NH3) donates its electron pair to the electron-deficient boron atom in BF3, forming a more stable adduct.
Conclusion:
The acidity of BF3 can be explained on the basis of the Lewis concept because it acts as a Lewis acid by accepting an electron pair from a Lewis base. This concept provides a broader understanding of acidity and allows for the characterization of compounds that cannot be explained by other concepts such as the Arrhenius or Bronsted-Lowry concepts.
Explanation:
The Lewis concept of acids and bases was proposed by Gilbert N. Lewis in 1923. According to this concept, an acid is defined as an electron pair acceptor, while a base is defined as an electron pair donor.
Acidity of BF3:
BF3 is a Lewis acid because it can accept an electron pair from a Lewis base. In BF3, the boron atom is electron deficient and has an incomplete octet. It has only six valence electrons, so it can accept a pair of electrons from a Lewis base to complete its octet.
When BF3 reacts with a Lewis base, such as NH3, the boron atom accepts a lone pair of electrons from the nitrogen atom in NH3. This forms a coordinate covalent bond, also known as a dative bond, between the boron and nitrogen atoms. The resulting species is called an adduct.
BF3 + NH3 → BF3NH3
In this reaction, BF3 acts as an acid because it accepts an electron pair from NH3, which acts as a base. The Lewis base (NH3) donates its electron pair to the electron-deficient boron atom in BF3, forming a more stable adduct.
Conclusion:
The acidity of BF3 can be explained on the basis of the Lewis concept because it acts as a Lewis acid by accepting an electron pair from a Lewis base. This concept provides a broader understanding of acidity and allows for the characterization of compounds that cannot be explained by other concepts such as the Arrhenius or Bronsted-Lowry concepts.
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Acidity ofBF3can be explained on the basis of which of the following concepts?a)Arrhenius conceptb)Bronsted Lowry conceptc)Lewis conceptd)Bronsted Lowry as well as Lewis conceptCorrect answer is option 'C'. Can you explain this answer?
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