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Hydrochloric Acid

A light bluis...

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A light bluish-green crystalline compound responds to the following tests:
(i). Its aqueous solution gives a brown precipitate on reaction with alkaline K $_{2}$ [HgI $_{4}$ ] solution.
(ii). Its aqueous solution gives a blue colour with K $_{3}$ [Fe(CN) $_{6}$ ] solution.
(iii). Its solution in hydrochloric acid gives a white precipitate with BaCl $_{2}$ solution. Identify the ions present and suggest the formula of the compound.

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Q. A light bluish green crystalline compound responds to the following tests:
(i) Its aqueous solution gives a brown precipitate or colouration with alkaline

K_{2} [{H g I}_{4}]

solution.
(ii) Its aqueous solution gives a blue colour with

K_{3} [{F e (C N)}_{6}]

solution.
(iii) Its solution in hydrochloric acid gives a white precipitate with

{B a C l}_{2}

solution. The molecular formula of the compound is

F e S O_{4} . (N H_{4})_{2} S O_{4} . 6 H_{2} O

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

Q. Aqueous solution of light greenish crystalline compound reacts with potassium ferricyanide to give a deep blue coloured solution or precipitate. Its chemical formula is:

Q. Identify the substances P, Q, and R in each case based on the information given below:
(i) The deliquescent salt P, turns yellow on dissolving in water, and gives a reddish brown precipitate with sodium hydroxide solution.
(ii) The white crystalline solid Q is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.
(iii) The pale green solid R turns reddish brown on heating. Its aqueous solution gives a white precipitate with barium chloride solution. The precipitate is insoluble in mineral acids.

Q. An aqueous solution of an unknown compound (X) gives the following reactions
(i) It gives a brown precipitate with alkaline

K M n O_{4}

solution.
(ii) It forms

H C l

O_{2}

when reacted with

C l_{2}

gas.
(iii) It liberates

I_{2}

from an acidified KI solution
(iv) It gives orange yellow color with acidified titanic sulfate solution. Identify

X

Q. An unknown inorganic compound

(X)

loses its water of crystallisation. On heating its aqueous solution gives the following reacion:
(i) it gives a white turbidity with dilute

H C l

solution.
(ii) it decolourises a solution of iodine in

K I

.
(iii) it gives a white precipitate with

A g N O_{3}

solution which turns black on standing.
Identify compound

(X)

?

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