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Science · 2024 · 2 marks
CBSE 2024 · Region 1 · Set 3 · Q23
Translate the following statement into a balanced chemical equation. "When barium chloride reacts with aluminium sulphate, aluminium chloride and…
Translate the following statement into a balanced chemical equation. "When barium chloride reacts with aluminium sulphate, aluminium chloride and barium sulphate are formed." State the type of this reaction giving reason to justify your answer.
Marking-scheme solution
\(\displaystyle 2 \mathrm{BaCl}_{2}(a q)+\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}(a q) \longrightarrow 2 \mathrm{AlCl}_{3}(a q)+3 \mathrm{BaSO}_{4}(s)\)
It is a precipitation reaction because insoluble \(\displaystyle \mathbf{B a S O}_{\mathbf{4}}\) is formed and gets precipitated / double displacement reaction because in this exchange of ions takes place between the reactants.
Name of the chemical reaction Reason
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