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Standard XII

Chemistry

Oxidising Reagent and Reducing Reagent

Sulphide ions...

Question

Sulphide ions react with $N a_{2} [F e (N O) {(C N)}_{5}]$ to form a purple colored compound $N a_{4} [F e {(C N)}_{5} (N O S)]$ .

In the reaction, the oxidation state of iron :

Changes from +2 to +3

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Changes from +3 to +2

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Changes from +2 to +4

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Does not change

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Solution

The correct option is D Does not change
Option (D) is correct.
The oxidation state of iron does not change.
$N a_{2} S + N a_{2} [F e (C N)_{5} N O] ⟶ N a_{4} [F e (C N)_{5} N O S] (c o m p l e x o f P u r p l e c o l o r)$

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Similar questions

Q. Chooe the correct amswer using given codes. Use T if statement is true and F if it is false.
(I) Sulphide ions reacts with

N a_{2} [F e (C N)_{5} (N O)]

to form a purple coloured compound

N a_{4} [F e (C N)_{5} (N O S)]

. In the reaction, the oxidation state of iron changes.
(II)

P t (I V)

compounds are relatively more stable than

N i (I V)

compounds.
(III) The welding of magnesium can be done in the atmosphere of helium.
(IV)

L i A I H_{4}

on hydrolysis will give

H_{2}

Q. Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false:
I. Sulphide ions react with

N a_{2} [F e (N O) (C N)_{5}]

to form a purple coloured compound

N a_{4} [F e (C N)_{5} (N O S)]

. In the reaction, the oxidation state of iron changes.
II. In

B_{2} H_{6}

vacant orbital takes part in hybridization.
III. The welding of magnesium can be done in the atmosphere of Helium.
IV.

L i A l H_{4}

on hydrolysis will give

H_{2}

Q. Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false.

(I)

Sulphide ions reacts with

{N a}_{4} [F e {(C N)}_{5} (N O)]

to form a purple coloured compound

{N a}_{2} [F e {(C N)}_{5} (N O S)]

. In the reaction, the oxidation state of iron changes.

(I I)

P t (I V)

compounds are relatively more stable than

N i (I V)

compounds.

(I I I)

the welding of magnesium can be done in the atmosphere of Helium

(I V)

L i A l H_{4}

on hydrolysis will give

H_{2}

Q. Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false.
(i)

C u^{+}

undergoes disproportionation to

C u

and

C u^{2 +}

in aqueous solution.
(ii)

H g_{2} C l_{2}

does not impart chromyl chloride test.
(iii) Sulphide ions react with sodium nitroprusside to form a purple coloured complex. In this reaction, oxidation state of iron changes.

Q. Sodium sulphide react with sodium nitroprusside to form a purple colured compund. During the reaction, the oxidation state of iron :

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Sulphide ions react with Na2[Fe(NO)(CN)5] to form a purple colored compound Na4[Fe(CN)5(NOS)].In the reaction, the oxidation state of iron :

The correct option is D Does not changeOption (D) is correct.The oxidation state of iron does not change.Na2S+Na2[Fe(CN)5NO]⟶Na4[Fe(CN)5NOS](complexofPurplecolor)

Sulphide ions react with $N a_{2} [F e (N O) {(C N)}_{5}]$ to form a purple colored compound $N a_{4} [F e {(C N)}_{5} (N O S)]$ .

In the reaction, the oxidation state of iron :

The correct option is D Does not change
Option (D) is correct.
The oxidation state of iron does not change.
$N a_{2} S + N a_{2} [F e (C N)_{5} N O] ⟶ N a_{4} [F e (C N)_{5} N O S] (c o m p l e x o f P u r p l e c o l o r)$