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Byju's Answer

Standard XII

Chemistry

Colour

Which of the ...

Question

Which of the following is/are correct for potassium ferrocyanide?

It gives a brown precipitate with

C u^{2 +}

ions

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It gives a red precipitate of mixed salt with

C d^{2 +}

ions

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It in excess gives a white precipitate with

Z n^{2 +}

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It develops a deep red coloration with

F e^{3 +}

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Solution

The correct options are
A It gives a brown precipitate with $C u^{2 +}$ ions
D It in excess gives a white precipitate with $Z n^{2 +}$
Option (A),(C) are correct.
(B) : It gives a yellow precipitate of mixed salt with $C d^{2 +}$ ions.
(D) : It gives a prussian blue precipitate of mixed salt with $F e^{3 +}$ ions.

Suggest Corrections

Similar questions

State True or False.

N H_{4} O H

gives a brown precipitate with

F e^{3 +}

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. The gas liberated on heating a mixture of two salts with

N a O H

, give a reddish brown precipitate with an alkaline solution of

K_{2} H g l_{4}

. The aqueous solution of the mixture on treatment with

B a C l_{2}

gives a white precipitate which is sparingly soluble in concentrated

H C l

. On heating the mixture with

K_{2} C r_{2} O_{7}

and concentrated

H_{2} S O_{4}

, red vapour

(A)

are produced. The aqueous solution of the mixture gives a deep blue ppt.

(B)

with Potassium ferricyanide solution. Identify the radicals.

A metal gives two chlorides ‘A’ and ‘B’. ‘A’ gives black precipitate with $N H_{4} O H$ and ‘B’ gives white precipitate .With KI ,‘B’ gives a red precipitate soluble in excess of KI. ‘A’ and ‘B’ are respectively :

Q. Assertion :Statement-I: Nessler's reagent gives a brown precipitate with

N H_{3}

.
Reason: Statement-II :

N H_{4} O H

gives a brown precipitate with

F e^{3 +}

Read the above assertion and reason and choose the correct option regarding it.

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Which of the following is/are correct for potassium ferrocyanide?

The correct options are A It gives a brown precipitate with Cu2+ ions D It in excess gives a white precipitate with Zn2+Option (A),(C) are correct. (B) : It gives a yellow precipitate of mixed salt with Cd2+ ions.(D) : It gives a prussian blue precipitate of mixed salt with Fe3+ ions.