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B(OH)(3) is...

`B(OH)_(3)` is

A

Lewis acid

B

Lewis base

C

Bronsted base

D

Bronsted acid

Text Solution

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The correct Answer is:
A
`B(OH)_(3)` is a Lewis acid.
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Boric acid Br(OH)_(3) is monobasic Lewis acid if gives H^(+) ions in aquoeus soluions as follows B(OH)_(3) + H_(2)O hArr [B(OH)_(4)]^(-) + H^(+) K_(a) = 5.9 xx 10^(-10) The P^(H) of 0.025M aqueous solution is [log 5.9 = 0.771]

(a) Why is La(OH)_(3) is more basic than Lu(OH)_(3) ? (b) Why ar the properties of third transition series quite similar to second transition series.

Why Ce(OH)_(3) is more basic than Lu(OH)_(3) ?

B(OH)_(3) overset(HOCH_(2)CH_(2)OH)to ?

DINESH PUBLICATION-P BLOCK ELEMENTS (GROUP 13 AND 14 )-Multiple choice
  1. Which of the following compound is not hydrolysed?

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  2. Which of the following forces bind together carbon atoms in diamond?

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  3. Na^(+), Mg^(2+), Al^(3+), and Si^(4+) are isoelectronic ions. Their io...

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  4. An ammoniacal solution of cuprous chloride (CuCl) absorbs

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  5. The oxide which does not act as reducing agent is:

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  6. The structure and hybridisation of Si in Si(CH(3))(4) is

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  7. The ion that cannot ne precipitated by both HCl and H(2)S is

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  8. In graphie, the electron are

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  9. Borax is uded as a cleaning agent because on dissolving in water, it g...

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  10. Which of the following anions is present in the chain structure of sil...

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  11. The stability of +1 oxidation state increases in the sequence :

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  12. The straight chain polymer is formed by

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  13. Which of the following molecular hydrises acts as a Lewis acid?

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  14. Reaction of diborane with ammonia gives initially

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  15. The correct order of mathching of the following compounds is:

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  16. B(OH)(3) is

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  17. Aluminum is exteracted from alumine AI(2)O(3) by electrolysis of a m...

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  18. The basic structural unit of silicates is

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  19. Which of the following is electron deficient ?

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  20. Boric acid is an acid because its molecule

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