In what solution do we dissolve boron oxide $(B_{2} O_{3})$ and silica $(S i O_{2})$ respectively to form borates and silicates?

Acid solution

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Alkali solution

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Salt solution

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Hydrogen gas

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Solution

The correct option is C Alkali solution
With alkali solution boron trioxide and silica can be converted into borates and silicates.
$4 N a O H + S i O_{2} \to N a_{4} S i O_{4} + 2 H_{2} O$
$B_{2} O_{3} + 2 N a O H + 3 H_{2} O \to 2 N a [B (O H)_{4}]$

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Similar questions

The constituents used in the manufacturing of different types of glasses are given below.

Silica( ${SiO}_{2}$ ), Sodium Carbonate ( ${Na}_{2} {CO}_{3}$ ), Calcium Carbonate ( ${CaCO}_{3}$ ), Potassium Carbonate( $K_{2} {CO}_{3}$ ), Boron Oxide ( $B_{2} O_{3}$ ), Alumina ( ${Al}_{2} O_{3}$ ) and Lead Oxide ( $PbO$ )

Choose the option/s that correctly matches the constituents and its use.

Q. Which of the following statements are correct ?

(i) Boron reacts with concentrated

H N O_{3}

to form nitric oxide and boric acid
(ii) Boron reacts with fused

N a O H

to form

H_{2} O_{2}

and boric acid
(iii) Boron reacts with

S i O_{2}

to form

S i

and

B_{2} O_{3}

Q. Silica

(S i O_{2})

is dissolved in a concentrated solution of NaOH under pressure.

Is silica precipitated by NaOH? Write the appropriate reaction.

Q. Silica dissolves in NaOH solution to form:

Q. Which of the following oxide dissolves in water to form an acidic solution?

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In what solution do we dissolve boron oxide (B2O3) and silica (SiO2) respectively to form borates and silicates?

The correct option is C Alkali solutionWith alkali solution boron trioxide and silica can be converted into borates and silicates. 4NaOH+SiO2→Na4SiO4+2H2OB2O3+2NaOH+3H2O→2Na[B(OH)4]

In what solution do we dissolve boron oxide $(B_{2} O_{3})$ and silica $(S i O_{2})$ respectively to form borates and silicates?

The correct option is C Alkali solution
With alkali solution boron trioxide and silica can be converted into borates and silicates.
$4 N a O H + S i O_{2} \to N a_{4} S i O_{4} + 2 H_{2} O$
$B_{2} O_{3} + 2 N a O H + 3 H_{2} O \to 2 N a [B (O H)_{4}]$