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In the reaction : 3Br(2)+6CO(3)^(2-)+3...

In the reaction :
`3Br_(2)+6CO_(3)^(2-)+3H_(2)Orarr5Br^(-)+BrO_(3)^(-)+6HCO_(3)^(-)`

A

(1) bromine is oxidised and carbonate is reduced

B

(2) bromine is both oxidised and reduced

C

(3) bromine is reduced and wate is oxidised

D

(4) bromine is neither oxidised nor reduced

Text Solution

Verified by Experts

The correct Answer is:
B
`3Br_2+ 6CO_3^(2-) + 3H_2O to 5Br^(-) + BrO_3^(-) + 6HCO_3^(-)` (disproportionation reaction )
In this reaction O.S. of Br changes from 0 ( in `Br_2`) to -1 (in `Br^-`) and +5 (in `BrO_3^-`) .Thus, in this reaction bromine is both oxidised (increases in O.S.) and reduced (decreases in O.S.) - disproportionation reaction.
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