Given : $\mathrm{XNa}_2 \mathrm{HAsO}_3+\mathrm{YNaBrO}_3+\mathrm{ZHCl} \rightarrow…
Given :
$\mathrm{XNa}_2 \mathrm{HAsO}_3+\mathrm{YNaBrO}_3+\mathrm{ZHCl} \rightarrow \mathrm{NaBr}+\mathrm{H}_3 \mathrm{AsO}_4+\mathrm{NaCl}$
The values of $\mathrm{X}, \mathrm{Y}$ and $\mathrm{Z}$ in the above redox reaction are respectively :
$2,1,2$
$2,1,3$
$3,1,6$
$3,1,4$
Solution
On balancing the given reaction, we find
$3 \mathrm{Na}_2 \mathrm{HAsO}_3+\mathrm{NaBrO}_3+6 \mathrm{HCl}\longrightarrow 6 \mathrm{NaCl}+3 \mathrm{H}_3 \mathrm{AsO}_4+\mathrm{NaBr}$