In the reaction
`3Br_(2) + 6CO_(3)^(2-) + 3H_(2)O to 5Br^(-) + 2BrO_(3)^(-)+6HCO_(3)^(-)`

Options

A. Bromine is oxidized and carbonate is reduced
B. Bromine is reduced and water is oxidized
C. Bronine is neither oxidized nor reduced
D. Bromine is both reduced nad oxidized

Answer

D

Explanation

`3Br_(2) +6CO_(3)^(2-) + 3H_(2)O to 5Br^(-)+BrO_(3)^(-) + 6HCO_(3)^(-)` oxidation number of `Br_(2)` changes from zero to -1 (in `Br^(-)` ) and + 5 (in `BrO_(3)^(-)`) , hence it is reduced as well as oxidized.