A certain salt X, gives the following results: When conc. H 2 SO 4 is added to a hot solution of X, white crystals of an acid Z separate out. - Wired Faculty

Question

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A certain salt X, gives the following results:
When conc. H₂SO₄ is added to a hot solution of X, white crystals of an acid Z separate out.

Solution

When concentrated H₂SO₄ is added to a hot solution of X (Borax), white crystals of an acid Z separate out, It shows that Z must be an orthoboric acid.
Chemistry of the reactions:
$left parenthesis straight i right parenthesis space stack Na subscript 2 straight B subscript 4 straight O subscript 7 with Borax left parenthesis straight X right parenthesis below. space 10 straight H subscript 2 straight O space rightwards arrow with water on top space stack straight H subscript 2 straight B subscript 4 straight O subscript 7 with Weak space acid below space plus space stack 2 NaOH with left parenthesis stong space alkali right parenthesis space plus space 8 straight H subscript 2 straight O below$
$left parenthesis ii right parenthesis space Na subscript 2 straight B subscript 4 straight O subscript 7. space 10 straight H subscript 2 straight O space rightwards arrow with Heat on top space space Na subscript 2 straight B subscript 4 straight O subscript 7 space plus space 10 straight H subscript 2 straight O space space Na subscript 2 straight B subscript 4 straight O subscript 7 space rightwards arrow with Heat on top space stack space stack 2 NaBO subscript 2 space plus space straight B subscript 2 straight O subscript 3 with underbrace below with Glassy space material space left parenthesis straight Y right parenthesis below$
$left parenthesis iii right parenthesis space Na subscript 2 straight B subscript 4 straight O subscript 7. space 10 straight H subscript 2 straight O space plus space straight H subscript 2 SO subscript 4 space rightwards arrow space space space stack 4 straight H subscript 3 BO subscript 3 with Boric space acid left parenthesis straight Z right parenthesis below space plus space Na subscript 2 SO subscript 4 space plus space 5 straight H subscript 2 straight O$

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The P-Block Elements

A certain salt X, gives the following results:
When conc. H₂SO₄ is added to a hot solution of X, white crystals of an acid Z separate out.

Some More Questions From The p-Block Elements Chapter

Name the element of group 13 which forms only covalent compounds.

Which element of group 13 forms amphoteric hydroxide?

Which element of group 13 forms the most stable +1 oxidation state?

What is the nature of boron trifluoride?

What is the structure of diborane?

Can borax bead test be performed for Ca²⁺ion?

Which is the hardest compound of boron?

What is inorganic benzene? Write its formula.

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The P-Block Elements

A certain salt X, gives the following results:When conc. H2SO4 is added to a hot solution of X, white crystals of an acid Z separate out.

Some More Questions From The p-Block Elements Chapter

Name the element of group 13 which forms only covalent compounds.

Which element of group 13 forms amphoteric hydroxide?

Which element of group 13 forms the most stable +1 oxidation state?

What is the nature of boron trifluoride?

What is the structure of diborane?

Can borax bead test be performed for Ca2+ ion?

Which is the hardest compound of boron?

What is inorganic benzene? Write its formula.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

A certain salt X, gives the following results:
When conc. H₂SO₄ is added to a hot solution of X, white crystals of an acid Z separate out.

Can borax bead test be performed for Ca²⁺ion?