On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained. What other name can be given to this precipitation reaction?

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Solution

On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, a white precipitate is obtained.

$N a_{2} S O_{3} + B a C l_{2} \to B a S O_{3} + 2 N a C l$
sodium sulphite Barium chloride Barium sulphite sodium chloride
$↓$
white ppt.

The above precipitation reaction is also called a double displacement reaction.

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