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JEE Advanced2011ChemistryRedox ReactionsActual

Reaction of Br ₂ with Na ₂ CO ₃ in aqueous solution gives sodium bromide and sodium bromate with evolution of CO ₂ gas. The number of sodium bromide molecules involved in the balanced chemical equation is

Correct answer

5

Step-by-step solution

Br ₂ is disproportionated in basic medium as 3 Br ₂+3 Na ₂ CO ₃ 5 NaBr + NaBrO ₃+3 CO ₂

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