Question

In the reaction
3Br₂+6CO²⁻₃+3H₂O⟶ 5Br⁻+ BrO⁻₃+6HCO⁻₃
(a) Bromine is oxidised and carbonate is reduced.
(b) Bromine is reduced and water is oxidised
(c) Bromine is neither reduced nor oxidised
(d) Bromine is both reduced and oxidised

Answer 1

Answer:

b). is the correct answer

Answer 2

(d) Bromine is both reduced and oxidized

Explanation:

3Br₂+6CO²⁻₃+3H₂O⟶ 5Br⁻+ BrO⁻₃+6HCO⁻₃

In the oxidation process, the oxidation number of bromine changes from 0 (in Br2) to +5 (in BrO3–) and in reduction, oxidation number of bromine changes from 0 (in Br2) to -1 (in Br –). Bromine is both reduced and oxidized.

Option D is the answer.