Bromine reacts with hot and concentrated N a 2 CO 3 to produce-A- NaBr - N aBrO 3- CO 2B- NaBrO - NaBrO 3- CO 2C- NaBr - N aBrO - CO 2D- NaBr - N aBrO 4- CO 2

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Byju's Answer

Standard XII

Chemistry

Copper II Sulphate

Bromine react...

Question

Bromine reacts with hot and concentrated $N a_{2} C O_{3}$ to produce:

N a B r + N a B r O + C O_{2}

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N a B r + N a B r O_{4} + C O_{2}

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N a B r + N a B r O_{3} + C O_{2}

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N a B r O + N a B r O_{3} + C O_{2}

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Solution

The correct option is C $N a B r + N a B r O_{3} + C O_{2}$
Bromine reacts with hot and concentrated $N a_{2} C O_{3}$ to produce sodium bromide and sodium bromate along with the evolution of carbon dioxide gas.
$3 B r_{2} + 3 N a_{2} C O_{3} \to 5 N a B r + N a B r O_{3} + 3 C O_{2}$

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Bromine gas ( ${Br}_{2}$ ) reacts with sodium carbonate ( ${Na}_{2} {CO}_{3}$ ) in aqueous solution and gives sodium bromide ( $NaBr$ ), sodium bromate ( ${NaBrO}_{3}$ ) and carbon-dioxide gas. How many sodium bromide molecules are obtained in the balanced chemical equation ? [2 MARKS]