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  4. The ratio of oxidation states of Cl in potassium chloride to that in potassium chlorate is

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Q. The ratio of oxidation states of $Cl$ in potassium chloride to that in potassium chlorate is

BITSATBITSAT 2014

Solution:

$K\overset{+5}{Cl}O_3 \to K\overset{-1}{Cl} + O_2$
Ratio $ = \frac{\text{oxidation state Cl in KCl}}{\text{oxidation state of Cl in} KClO_3}$
$ = \frac{-1}{5}$