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Interhalogen Compounds - Structures

Which of the ...

Question

Which of the following statements is/are incorrect regarding ozone?
I. lt oxidises $H C l$ to $C l_{2}$ .
II. Mercury losses its meniscus after reacting with ozone.
III. It reduces $K_{4} [F e (C N)_{6}]$ to $K_{3} [F e (C N)_{6}]$ .

Only I

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II & III

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Only III

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None of the above

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Solution

The correct option is D Only III
Ozone acts as oxidising agent.
$H C l ⟶ C l_{2}$
$H C l$ is being oxidised.
$O_{3} ⟶ O_{2} + [O]$
Thus it oxidises $K_{4} [F e (C N)_{6}]$ to $K_{3} [F e (C N)_{6}]$ . III statement is incorrect.
$2 H g + O_{3} \to H g_{2} O + O_{2}$
$∴ H g$ losses its meniscus after reacting with ozone. II is correct.
Option C is correct.

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C l_{2}

H C l

P b S

{P b S O}_{4}

K_{4} [F e (C N)_{6}]

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

K_{4} [F e (C N)_{6}]

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

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

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F e (O H)_{3}

[C o (N O_{2})_{6}]^{4 -}

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[C O (H_{2} O)_{6}]^{2 +}

[C O (N H_{3})_{6}]^{2 +}

Stable complex based on EAN rule:

i) $K_{4} [F e (C N)_{6}]$

ii) $[C o (N H_{3})_{5} C l] C l_{2}$

iii) $[N i (C O)_{4}]$

iv) $K_{2} [N i (C N)_{4}]$

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