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Science · 2024 · 2 marks
CBSE 2024 · Region 1 · Set 2 · Q26
Translate the following statements into chemical equations and then balance them: (i) Solution of barium chloride and aluminium sulphate in water…
Translate the following statements into chemical equations and then balance them :
(i)
Solution of barium chloride and aluminium sulphate in water react to give insoluble barium sulphate and the solution of aluminium chloride.
(ii)
Aluminium metal reacts with steam to give aluminium oxide and hydrogen gas.
Marking-scheme solution
(i)
\(\displaystyle 3 \mathrm{BaCl}_{2}(\mathrm{aq})+\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}(\mathrm{aq}) \longrightarrow 3 \mathrm{BaSO}_{4}(\mathrm{~s})+2 \mathrm{AlCl}_{3}(\mathrm{aq})\)
Equation Balancing
(ii)
\(\displaystyle 2 \mathrm{Al}(s)+3 \mathrm{H}_{2} \mathrm{O}(g) \rightarrow \mathrm{Al}_{2} \mathrm{O}_{3}(s)+3 \mathrm{H}_{2}(g)\)
Equation Balancing
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