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Precipitation Reaction

Sodium hydrox...

Question

Sodium hydroxide solution is added to the solution containing the Pb²⁺ ion.

Match the ions with their coloured precipitate.

A

Reddish brown ppt. soluble in excess

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B

Reddish brown ppt. insoluble in excess

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C

White ppt. soluble in excess

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D

White ppt. insoluble in excess

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E

Dirty green ppt. soluble in excess

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F

Dirty green ppt. insoluble in excess

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G

Blue ppt. soluble in excess

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H

Blue ppt. insoluble in excess

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Solution

The correct option is C
White ppt. soluble in excess

White ppt. soluble in excess

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Similar questions

Q. Hydrated salt (A) +

B a C l_{2} ⟶

white ppt (B) insoluble in

H N O_{3}

(A) (in dil..HCl) +

H_{2} S ⟶

black ppt soluble in 50%

H N O_{3}

N H_{3}

⟶

deep blue solution (C)
(A) +microscomic salt

△ \to

green (D) when hot
(A) +Kl solution

⟶

reddish brown changing to white ppt after hypo is added.
2.495 g of (A) gave 2.33 g of (B). Here (A) is identified as

C u S O_{4} . 5 H_{2} O

.
If true enter 1, else enter 0.

Q. Sodium hydroxide solution is added to the solutions containing the ions mentioned in List X. List Y gives the details of the precipitate. Match the ions with their coloured precipitates.

List X	List Y
(i) Pb²⁺	(A) Reddish brown
(ii) Fe²⁺	(B) White insoluble in excess
(iii) Zn²⁺	(C) Dirty green
(iv) Fe³⁺	(D) White soluble in excess
(v) Cu²⁺	(E) White soluble in excess
(vi) Ca²⁺	(F) Blue

Q. White ppt. in (c) and the soluble complex formed from white ppt. with the hypo solution is/are___________.

Q. (A) gives white ppt with

A g N O_{3}

N H_{3}

. (A) gives green ppt (B) with NaOH but ppt dissolves to yellow solution (C) when heated with

H_{2} O_{2}

. (C) gives yellow ppt (D) with

B a C l_{2}

.
According to above experiment complete the matrix.

Q. On mixing the aqueous solutions of compounds

(A)

(B)

, an insoluble compound

(C)

is produced along with another water soluble compound

(D)

(A)

on heating gives brown

N O_{2}

gas with a cracking noise. An aqueous solution of compound

(A)

gives black ppt. with

H_{2} S

(A)

also gives white ppt. with dil.

H C l

which is soluble in hot water and reappears on cooling. The hot water extract of compound

(A)

gives yellow ppt. with

K_{2} C r O_{4}

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