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Q.
Which of the following will not be oxidized by ozone ?
UP CPMTUP CPMT 2010The p-Block Elements - Part2
Solution:
$KMnO_{4}$ cannot be further oxidized by $O_{3}$. It has the highest $+7$ oxidation state of $Mn$ in it. Alkaline $KI$ is oxidised to potassium iodate and periodate.
$KI+3O_{3} \to \underset{\text{Pot. iodate}}{{KIO_{3}}}+3O_{2}$
$KI+4O_{3} \to \underset{\text{Pot. periodate}}{{KIO_{4}}}+4O_{2}$
It oxidises manganate to permanganate
$2K_{2}MnO_{4} + H_{2}O+O_{3} \to 2KMnO_{4}+2KOH+O_{2}$
Acidified ferrous sulphate is oxidized to ferric sulphate
$2FeSO_{4}+H_{2}SO_{4}+O_{3} \to Fe_{2} (SO_{4})_{3} + H_{2}O+O_{2}$