The ratio of oxidation states of $\mathrm{Cl}$ in potassium chloride to that in potassium chlorate is
The ratio of oxidation states of $\mathrm{Cl}$ in potassium chloride to that in potassium chlorate is
$\frac{+1}{5}$
$\frac{-1}{5}$
$\frac{-2}{5}$
$\frac{+3}{5}$
Solution
\mathrm{KCl} x & =-1 & \mathrm{KClO}_{3}
potassium chloride $+1+x-6=0$
$
x=+5
$
potassium chlorate.
$\therefore$ Ratio of oxidation state of $\mathrm{Cl}=\frac{-1}{5}$