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 Br_2 is disproportionated in basic medium as 3 Br_ 2 +3 Na _ 2 CO_ 3 5 NaBr+NaBrO _ 3 +3 CO_ 2

JEE Advanced 2011Paper 1

JEE Advanced 2011 · Paper 1 · Chemistry · Redox Reactions

Reaction of Br_2 with Na_2 CO_3 in aqueous solution gives sodium...

Reaction of

\mathrm{Br}_2

with

\mathrm{Na}_2 \mathrm{CO}_3

in aqueous solution gives sodium bromide and sodium bromate with evolution of

\mathrm{CO}_2

gas. The number of sodium bromide molecules involved in the balanced chemical equation is

\mathrm{Br}_2

is disproportionated in basic medium as 3

\mathrm{Br}_{2}+3 \mathrm{Na}

}_{2}

\mathrm{CO}_{3} \longrightarrow 5 \mathrm{NaBr}+\mathrm{NaBrO}

}_{3}+3

\mathrm{CO}_{2}