Chemistry - Redox Reactions Question with Solution | TestHub

A solution of ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ is standardized iodometrically against 0.1262 g of ${\mathrm{KBrO}}_3$ where ${\mathrm{BrO}}_3{}^{-}$changes to ${\mathrm{Br}}^{-}$. This process requires 45 mL of the ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ solution. What is the normality of the ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ ? [Mw. of ${\mathrm{KBrO}}_3=167$ ]