Reaction of $B r_{2}$ with $N a_{2} C O_{3}$ in aqueous solution gives sodium bromide and sodium bromate with evolution of $C O_{2}$ gas. The number of sodium bromide molecules involved in the balanced chemical equation is :

5

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2.5

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Solution

The correct option is A $5$
The balanced chemical equation for the reaction is
$3 B r_{2} + 3 N a_{2} C O_{3} \to 5 N a B r + N a B r O_{3} + 3 C O_{2}$
The number of sodium bromide molecules involved in the balanced chemical equation is 5.

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Reaction of Br2 with Na2CO3 in aqueous solution gives sodium bromide and sodium bromate with evolution of CO2 gas. The number of sodium bromide molecules involved in the balanced chemical equation is :

The correct option is A 5 The balanced chemical equation for the reaction is 3Br2+3Na2CO3→5NaBr+NaBrO3+3CO2The number of sodium bromide molecules involved in the balanced chemical equation is 5.

Reaction of $B r_{2}$ with $N a_{2} C O_{3}$ in aqueous solution gives sodium bromide and sodium bromate with evolution of $C O_{2}$ gas. The number of sodium bromide molecules involved in the balanced chemical equation is :

The correct option is A $5$
The balanced chemical equation for the reaction is
$3 B r_{2} + 3 N a_{2} C O_{3} \to 5 N a B r + N a B r O_{3} + 3 C O_{2}$
The number of sodium bromide molecules involved in the balanced chemical equation is 5.