• # question_answer Can the reaction, $C{{r}_{2}}O_{7}^{2-}+{{H}_{2}}O\,\,\,\rightleftarrows \,2CrO_{4}^{2-}+2{{H}^{+}}$ be regarded as a redox reaction?

Oxidation number of Cr in $C{{r}_{2}}O_{7}^{2-}=+6$ Oxidation number of Cr in $C{{r}_{2}}O_{4}^{2-}=+6$ Since during this reaction, the oxidation number of Cr has neither decreased nor increased, therefore, the above reaction cannot be regarded as a redox reaction.