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Which of the following are Lewis acids?...

Which of the following are Lewis acids?

A

`PH_(3) and BCl_(3)`

B

`AlCl_(3) and SiCl_(4)`

C

`PH_(3) and SiCl_(4)`

D

`BCl_(3) and AlCl_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`BCl_(3)` - electron deficient, incomplete orbit.
`AlCl_(3)` - electron deficient, incomplete octet.
Note. `SiCl_(4)` can accept a lone pair of electrons in d-orbital of silicon and hence acts as a Lewis acid.
Hence, option 2 can also be considered as correct
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PRADEEP-EQUILIBRIUM-Competition Focus (I. Multiple Choice Questions(with one correct Answer)) (II. Various concepts of Acids and Bases, their dissociation constants and strength)
  1. In the equation I(2)+I^(-) rarr, I(3)^(-) which is Lewis base

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  2. Which of the following are Lewis acids?

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  3. Conjugate base of H(2) is

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  4. The conjugate base of OH^(-) is :

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  5. Which one of the following is the correct statement ?

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  6. Which one of the following species cannot act as both Bronsted acid a...

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  7. Which one of the following behaves as Lewis base as well as Bronsted-L...

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  8. Mg^(2+) is .......... Than Al^(3+)

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  9. Sulphanilic acid is a/an:

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  10. Choose the correct order arranged in decreasing order of basicity

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  11. Which one of the following ionic species has the greatest proton affin...

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  12. The correct order of increasing basicity of the given conjugate bases ...

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  13. Three reactions involving H(2)PO(4)^(-) are given below I. H(3)PO(4...

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  14. Which one of the following molecules hydrides acts as a Lewis acid ?

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  15. Which of the of the following fluoro -compouds is most likely to beahv...

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  16. Which of the following statements about HCO(3)^(-) are correct ? 1. ...

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  17. Which of the following is least likely to behave as Lewis acid?

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  18. The correct order of increasing [H3O^+] in the following aqueous solut...

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  19. Strongest conjugate base is

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  20. The strongest base of the following species is

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