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Byju's Answer

Standard XII

Chemistry

Introduction to Inorganic Chemistry

A colourless ...

Question

A colourless water soluble solid $A$ on heating gives equimolar quantities of $B$ and $C$ . $B$ gives dense white fumes with $H C l$ and $C$ does so with $N H_{3}$ . $B$ gives brown precipitate with Nessler's reagent and $C$ gives white precipitate with nitrates of ${A g}^{+}, {P b}^{+}$ and ${H g}^{+}$ . $A$ is:

N H_{4} C l

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N H_{4} C O_{3}

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N H_{4} N O_{2}

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F e S O_{4}

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Solution

The correct option is A $N H_{4} C l$
$N H_{4} C l \to N H_{3} + H C l$
(A) (B) (C)
$N H_{3} + H C l \to N H_{4} C l (W h i t e f u m e s)$
$N H_{3} + 2 K_{2} [H g I_{4}] + 3 K O H \to N H_{2} H g O . H g I (b r o w n p p t) + 7 K I + H_{2} O$
$H C l + M n O_{3} \to M C l (w h i t e p p t) + H N O_{3}$
$M = A g^{+}, P b^{+}, H g^{+}$

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Similar questions

Q. (A), a colourless solution, gives white precipitate (B) with NaOH solution but the precipitate dissolves in excess of NaOH forming (C). (C) does not give any precipitate with

H_{2} S

but on boiling with

N H_{4} C l

, white precipitate (B) appears. (A) also gives yellow precipitate with

A g N O_{3}

. (A), (B) and (C) are as follows:

(A) :

A l B r_{3}

(B) :

A l (O H)_{3}

and (C) :

N a A l O_{2}

If true enter 1, if false enter 0.

Q. Colourless solution of (A) gives white precipitate (B) with

A g N O_{3}

solution, soluble in aq.

N H_{3}

. (A) also gives white precipiatete (C) with NaOH soluble in excess of it forming (D). (D) gives white precipiate (E) with

H_{2} S

.(A), (B), (C), (D) and (E) are as follows.

(A) :

Z n C l_{2}

(B) :

A g C l

Z n (O H)_{2}

(D) :

N a_{2} Z n O_{2}

(E) :

Z n S

A colourless mixture of two substances (A) and (B) (excess) is soluble in

H_{2} O

, separately. (A) turns blue litmus red and (B) turns red litmus blue. (A) gives white ppt. with (B), which dissolves in excess of (B) forming (C). (A) when placed in moist air gives fumes and can form a dimer. (A) gives white ppt. with

{N H}_{4} C l

and

{N H}_{4} O H

soluble in (B). (A) also gives white precipitate with

{A g N O}_{3}

soluble in

{N H}_{4} O H

Thus, colourless mixture contains ___________.

Q. Identify A, B, C, D and choose the correct statement(s):

A + N_{2} △ - \to B H_{2} O - - \to C w h i t e p p t ↓ + D

White precipitate(C) dissolves in

N a O H

solution and the gas (D) gives white fumes with

H C l

A colourless mixture of two substances, (A) and (B) (excess) is soluble in

H_{2} O

{N H}_{4} C l

and

{N H}_{4} O H

soluble in (B). (A) also gives white precipitate with

{A g N O}_{3}

soluble in

{N H}_{4} O H

Thus, dimer formed has _______ bonding .

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A colourless water soluble solid A on heating gives equimolar quantities of B and C. B gives dense white fumes with HCl and C does so with NH3. B gives brown precipitate with Nessler's reagent and C gives white precipitate with nitrates of Ag+,Pb+ and Hg+. A is:

The correct option is A NH4ClNH4Cl→NH3+HCl (A) (B) (C)NH3+HCl→NH4Cl(White fumes)NH3+2K2[HgI4]+3KOH→NH2HgO.HgI(brown ppt)+7KI+H2OHCl+MnO3→MCl(whiteppt)+HNO3M=Ag+,Pb+,Hg+