Chemistry - Mole Concept Question with Solution | TestHub

In hot alkaline solution, ${\mathrm{Br}}_2$ disproportionates to ${\mathrm{Br}}^{-}$and ${\mathrm{BrO}}_3^{-}$

$3{\mathrm{Br}}_2+6{\mathrm{OH}}^{-}⟶5{\mathrm{Br}}^{-}+{\mathrm{BrO}}_3^{-}+3{\mathrm{H}}_2\mathrm{O}$

Hence, the equivalent weight of Br₂ (molecular weight = M) is: