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Byju's Answer

Standard XII

Chemistry

Introduction to Oxidation and Reduction

To aqueous so...

Question

To aqueous solution of $X$ on adding $C u S O_{4}$ a brown precipitate is obtained which turns white on adding of excess of $N a_{2} S_{2} O_{3}$ solution; on addition of $A g^{+}$ ion solution, a yellow curdy precipitate is obtained which is insoluble in $N H_{4} O H$ ; then $X$ will be :

C u_{2} I_{2} + I_{3}^{⊖}

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C u I_{2}

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C u_{2} I_{2}

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K I

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Solution

The correct option is D $K I$
Option (D) is correct.
The aqueous solution $X$ is $K I$ .

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Similar questions

Q. A metal chloride

X

shows the following reactions.
(i) When

H_{2} S

is passed in an acidified aqueous solution of

X

, a black precipitate is obtained
(ii) The precipitate obtained at step (i) is not soluble in yellow ammonium sulphide.
(iii) When a solution of stannous chloride is added to an aqueous solution of

X

, a white precipitate is obtained which turns grey on addition of more of stannous chloride.
(iv) When an aqueous solution of

K I

is added to an aqueous solution of (

X

), a red precipitate is obtained which dissolves on addition of excess of

K I

.
Identify

X

An aqueous solution of an inorganic compound (X) gives the following reactions.

(i) With an aqueous solution of

B a C l_{2}

, a precipitate insoluble in dilute

H C l

is obtained.

(ii) Addition of excess of

K I

gives a brown precipitate which turns white on addition of excess hypo solution.

(iii) With an aqueous solution of potassium ferrocyanide a chocolate colored ppt. is obtained.

Identify X :

Q. An aqueous solution of inorganic compound

(X)

gives the following reactions.

(i) with an aqueous solution of

B a C l_{2}

a precipitate insoluble in dilute

H C l

is obtained.
(ii) addition of an excess of

K I

gives a brown appearance that turns white on the addition of an excess of hypo.
(iii) with an aqueous solution of

K_{4} F e (C N)_{6}

a chocolate coloured precipitate is obtained.

Identify

(X)

Q. The certain inorganic compound (X) shows the following reactions:

(i) On passing

H_{2} S

through an acidified solution of (X), a brown precipitate is obtained.
(ii) the precipitate obtained at step(i) dissolves in excess of yellow ammonium sulphide.
(iii) On adding an aqueous solution of

N a O H

to a solution of (X), first, a white precipitate is obtained which dissolves in excess of

N a O H

.
(iv) The aqueous solution of (X) reduces ferric chloride. (X) is

{S n C l}_{2}

If the given statement is true enter 1, else enter 0.

Q. A black coloured compound

(A)

on reaction with dilute

H_{2} S O_{4}

gives a gas

(B)

which on passing in a solution of an acid

(C)

gives a white turbidity

(D)

. Gas

(B)

when passed in an acidified solution of a compound

(E)

gives a precipitate

(F)

soluble in dil.

H N O_{3}

. After boiling this solution when an excess of

N H_{4} O H

is added, a blue coloured compound

(G)

is formed. To this solution on addition of acetic acid and aqueous

K_{4} [F e (C N)_{6}]

a chocolate precipitate

(H)

is obtained. On addition of an aqueous soluion of

B a C l_{2}

to an aqueous solution of

(E)

, a white precipitate insoluble in

H N O_{3}

is obtained. Identify

(G)

and

(H)

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To aqueous solution of X on adding CuSO4 a brown precipitate is obtained which turns white on adding of excess of Na2S2O3 solution; on addition of Ag+ ion solution, a yellow curdy precipitate is obtained which is insoluble in NH4OH; then X will be :

The correct option is D KIOption (D) is correct.The aqueous solution X is KI.

To aqueous solution of $X$ on adding $C u S O_{4}$ a brown precipitate is obtained which turns white on adding of excess of $N a_{2} S_{2} O_{3}$ solution; on addition of $A g^{+}$ ion solution, a yellow curdy precipitate is obtained which is insoluble in $N H_{4} O H$ ; then $X$ will be :

The correct option is D $K I$
Option (D) is correct.
The aqueous solution $X$ is $K I$ .