Aqueous solution of borax reacts with two mol of acids. This is because of - Options: A . &nbsp Formation of 2 mol of B ( O H ) 3 only B . &nbsp Formation of 1mol of [ B ( O H ) 4 ] − only C . &nbsp Formation of 1 mol each of B ( O H ) 3 and [ B ( O H ) 4 ] − D . &nbsp Formation of 2 mol each of [ B ( O H ) 4 ] − and B ( O H ) 3 , of which only [ B ( O H ) 4 ] − reacts with acid

Aqueous solution of borax reacts with two mol of acids. This is because of -

Question -

Aqueous solution of borax reacts with two mol of acids. This is because of -

Options:

A . Formation of 2 mol of

B (O H)_{3}

only

B . Formation of 1mol of

[B (O H)_{4}]^{-}

only

C . Formation of 1 mol each of

B (O H)_{3}

and

[B (O H)_{4}]^{-}

D . Formation of 2 mol each of

[B (O H)_{4}]^{-}

and

B (O H)_{3}

, of which only

[B (O H)_{4}]^{-}

reacts with acid

Answer: Option D
:
D

$N a_{2} B_{4} O_{7} + 7 H_{2} O \to 2 B (O H)_{3} + 2 N a [B (O H)_{4}]$

$B (O H)_{3} o r H_{3} B O_{3}$ is an acid and does not react with acid.

Hence $N a [B (O H)_{4}]$ reacts with acid.

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