Chemistry - Complete d-block Question with Solution | TestHub

$2{\text{CrO}}_4^{2-}+2{\text{H}}^{+}⟶{\text{Cr}}_2{\text{O}}_7^{2-}+{\text{H}}_2\text{O}$[where x= pH = 4 - 5]

${\text{Cr}}_2{\text{O}}_7^{2-}+2{\text{OH}}^{-}⟶2{\text{CrO}}_4^{2-}+{\text{H}}_2\text{O}$[where y =pH = 9 - 10]

so pH value is 5 and 9 respectively