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Reactions of Carbon and Carbon Dioxide

When sulphurd...

Question

When sulphurdioxide gas is bubbled through an aqueous solution of copper sulphate in the presence of potassium thiocyanate. The reaction which take place is : $2 C u {S O}_{4} + {S O}_{2} + 2 K C N S + 2 H_{2} O \to 2 C u C N S ↓ + K_{2} {S O}_{4} + 2 H_{2} S O_{4}$
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Solution

$2 C u {S O}_{4} + {S O}_{2} + 2 K C N S + 2 H_{2} O \to 2 C u C N S + K_{2} {S O}_{4} + 2 H_{2} S O_{4}$
Cuprous thiocyanate is formed.

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Similar questions

Q. Statement: Fehling solution

A

consists of an aqueous solution of copper sulphate, while Fehling solution

B

consists of an alkaline solution of sodium potassium tartrate.

If the above statement true enter 1, else enter 0.

Q. If true enter 1, else enter 0.
The gas liberated on heating a mixture of two salts with

N a O H

, gives a reddish brown precipitate with an alkaline solution of

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

. The aqueous solution of the mixture on treatment with

{B a C l}_{2}

gives a white precipitate which is sparingly soluble in conc.

H C l

. On heating the mixture with

K_{2} {C r}_{2} O_{7}

H_{2} {S O}_{4}

, red vapours (A) are produced. The aqueous solution of the mixture gives a deep blue colouration (B) with potassium ferricyanide solution. The radicals in the given mixture are

F e^{2 +}, N H_{4}^{+}; S O_{4}^{2 +}, C l^{-}

C r O_{2} C l_{2}

Q. When an aqueous solution of sodium fluoride is electrolysed, the gas liberated at anode is

O_{2}

.
If true enter 1, else enter 0.

Q. When aqueous

K C N

is added to a solution of

C u S O_{4}

, a white precipitate soluble in excess of

K C N

is formed. No precipitate is formed when

H_{2} S

gas is bubbled through the solution at this point because stable

[C u (C N)_{4}]^{3 -}

does not ionize to give

C u^{+}

.
If true enter 1, else enter 0.

C O_{2}

gas is passed into

{M n O}_{4}^{2 -}

solution, a disproportionation reaction takes place.

3 M n O_{4}^{2 -} + 4 H^{+} \to M n O_{2} + 2 M n O_{4}^{-} + H_{2} O

If true enter 1, else enter 0.

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Reactions of Carbon and Carbon Dioxide

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