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Question
In a double displacement reaction such as the reaction between sodium sulphate solution and barium chloride solution:
- exchange of atoms takes place
- exchange of ions takes place
- a precipitate is produced
- an insoluble salt is produced
The correct option is:
Options
(B) and (D)
(A) and (C)
only (B)
(B), (C) and (D)
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Solution
(B), (C) and (D)
Explanation:
\[\ce{\underset{\text{Sodium sulphate}}{Na2SO4(aq)}+\underset{\text{Barium Chloride}}{BaCl2(aq)}->\underset{\text{Barium Sulphate}}{BaSO4(s)}+\underset{\text{Sodium Chloride}}{2NaCl(aq)}}\]
The white precipitate of BaSO4 is formed by the reaction of `"SO"_4^(2-)` and Ba2+.
Hence, the correct answer is the (B), (C), and (D).
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