JEE Advanced 2021 Paper 2 Q19 Chemistry Inorganic Chemistry p-Block Elements (Groups 15-18) Medium

JEE Advanced 2021 Paper 2 · Q19 · p-Block Elements (Groups 15-18)

Ozonolysis of ClO$_2$ produces an oxide of chlorine. The average oxidation state of chlorine in this oxide is _____.

Reveal answer + step-by-step solution

Correct answer:6

Solution

Ozonolysis (reaction with O$_3$) of ClO$_2$: 2 ClO$_2$ + 2 O$_3$ $\rightarrow$ Cl$_2$O$_6$ + 2 O$_2$.

In Cl$_2$O$_6$, let oxidation state of Cl be x. Charge balance: $2x + 6(-2) = 0$ $\Rightarrow$ $2x = 12$ $\Rightarrow$ $x = +6$.

Hence the average oxidation state of chlorine in Cl$_2$O$_6$ is $+6$ (the value asked is 6).

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