The following sequence of reactions are used to convert Borax into Boron- Na2 -B4 O5 OH4 -8H2 OH3 BO3B2 O3BoronBReagents X and Y are respectively-

Borax in acidic medium gives boric acid, which upon heating nbsp; forms B_2O_3, then it is reduced by Mg to form boron. B_2O_3 B+MgO ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Borax

The following...

Question

The following sequence of reactions are used to convert Borax into Boron.
$N a_{2} [B_{4} O_{5} (O H)_{4}] .8 H_{2} O X - \to H_{3} B O_{3} △ - \to B_{2} O_{3} Y \to B B o r o n$
Reagents X and Y are respectively:

Base, Al

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Acid,C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Base,Fe

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Acid,Mg

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D Acid,Mg
Borax in acidic medium gives boric acid, which upon heating forms $B_{2} O_{3}$ , then it is reduced by $M g$ to form boron.
$B_{2} O_{3} N a o r M g - ----- \to B + M g O$

Suggest Corrections

Similar questions

Q. The following sequence of reactions are used to convert Borax into Boron.

N a_{2} [B_{4} O_{5} (O H)_{4}] .8 H_{2} O X - \to H_{3} B O_{3} △ - \to B_{2} O_{3} Y \to B B o r o n

Reagents X and Y are respectively:

Q. Borax is converted into crystalline boron by the following steps:

B o r a x X \to H_{3} B O_{3} Δ \to B_{2} O_{3} Y - \to Δ B

Then

X

and

Y

are respectively:

Borax is converted into crystalline boron by the following steps.

$B o r a x x ⟶ H_{3} B O_{3} H e a t ⟶ B_{2} O_{3} y ⟶ H e a t B$
X & Y are respectively

Q. Borax is correctly represented as

N a_{2} [B_{4} O_{5} (O H)_{4}] .8 H_{2} O

. Number of tetrahedral boron atoms present are

x

and number of

B - O - B

bonds are

y

. The value of

\frac{y}{x}

There are two scenarios and in either case, we start with 5-oxohexanal. A reagent or sequence of reactions "A"
helps convert the substrate into 6-hydroxyhexan-2-one. On the other hand, a reagent or sequence of reactions "B"
converts the starting compound into 5-hydroxyhexanal. A and B are:

Join BYJU'S Learning Program

The following sequence of reactions are used to convert Borax into Boron. Na2[B4O5(OH)4].8H2OX−→H3BO3△−→B2O3Y→BBoron Reagents X and Y are respectively:

The correct option is D Acid,MgBorax in acidic medium gives boric acid, which upon heating forms B2O3, then it is reduced by Mg to form boron. B2O3Na or Mg−−−−−−→B+MgO

The following sequence of reactions are used to convert Borax into Boron.
$N a_{2} [B_{4} O_{5} (O H)_{4}] .8 H_{2} O X - \to H_{3} B O_{3} △ - \to B_{2} O_{3} Y \to B B o r o n$
Reagents X and Y are respectively:

The correct option is D Acid,Mg
Borax in acidic medium gives boric acid, which upon heating forms $B_{2} O_{3}$ , then it is reduced by $M g$ to form boron.
$B_{2} O_{3} N a o r M g - ----- \to B + M g O$