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Science · 2024 · 2 marks
CBSE 2024 · Region 3 · Set 2 · Q21
When a few drops of Barium chloride solution are added to an aqueous solution of Sodium sulphate, a white precipitate is obtained. (a) Write balanced…
When a few drops of Barium chloride solution are added to an aqueous solution of Sodium sulphate, a white precipitate is obtained.
(a)
Write balanced chemical equation for the reaction involved.
(b)
What is the other name of this precipitation reaction ? Why is it called so ?
Marking-scheme solution
(a) \(\displaystyle \mathrm{BaCl}_{2(\mathrm{aq})}+\mathrm{Na}_{2} \mathrm{SO}_{4(\mathrm{aq})} \rightarrow 2 \mathrm{NaCl}(\mathrm{aq})+\mathrm{BaSO}_{4(\mathrm{~s})}\)
Double displacement reaction
As exchange of ions takes place
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