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Boric acid is prepared from borax by the...

Boric acid is prepared from borax by the action of

A

hydrochloric acid

B

sodium hydroxide

C

carbon dioxide

D

sodium carbonate

Text Solution

Verified by Experts

The correct Answer is:
A
`Na_(2)B_(4)O_(7).10H_(2)O overset(" conc. HCl ")rarr H_(3)BO_(3) overset(100^(@)C)rarr HBO_(2) overset(150-160^(@)C)rarr underset("tetraboric acid")(H_(2)B_(4)O_(7))`
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AAKASH SERIES-ELEMENTS OF BORON FAMILY-LECTURE SHEET (EXERCISE - II) LEVEL - II (ADVANCED)
  1. Which is pure basic oxide

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  2. The number of sigma and pi bonds present in inorganic benzene

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  3. B(OH)(3)+NaOH hArr NaBO(2)+Na[B(OH)(4)]+H(2)O How can this reactio...

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  4. Boric acid is prepared from borax by the action of

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  5. Select the correct statements about diborane

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  6. Al(2)(SO(4))(3)+NH(4)OH rarr X,X is

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  7. Which of the following reaction(s) is/are involved in thermit process ...

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  8. In the reaction 2X+B(2)H(6)rarr [BH(2)X(2)]^(+)[BH(4)]^(-) the ...

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  9. Which of the following oxides are basic ?

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  10. Alumina is

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  11. Potash alum is used as a

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  12. Boranes have general formula

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  13. Hydrated AlCl(3) is used as

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  14. Boron reacts with oxygen at 700^(@)C to give (A). Compound (A) reacts ...

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  15. Boron reacts with oxygen at 700^(@)C to give (A). Compound (A) reacts ...

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  16. Boron reacts with oxygen at 700^(@)C to give (A). Compound (A) reacts ...

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  17. {:(,"Column - I",,"Column - II"),((A),H(3)BO(3),(P),"Hydrogen bonds"),...

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  18. In solid conundrum the number of oxygen atoms coordinate to aluminium ...

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  19. Total number of molecules having three centered two e^(-) bonds among ...

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  20. Tri alkyl aluminium molecules exists as dimer which contains 3 centere...

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