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

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

A

Bromine is oxidised and carbonate is reduced

B

Bromine is both oxidised and reduced

C

Bromine is reduced and water is oxidised

D

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^(-)`
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 (increase in O.S.) and reduced (decrease in O.S.).
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