Question.
Write the balanced equation for the following chemical reactions.
(i) Hydrogen + Chlorine Hydrogen chloride
(ii) Barium chloride + Aluminium sulphate Barium sulphate + Aluminium chloride
(iii) Sodium + Water Sodium hydroxide + Hydrogen
Write the balanced equation for the following chemical reactions.
(i) Hydrogen + Chlorine Hydrogen chloride
(ii) Barium chloride + Aluminium sulphate Barium sulphate + Aluminium chloride
(iii) Sodium + Water Sodium hydroxide + Hydrogen
solution:
(i) $\mathrm{H}_{2}(\mathrm{~g})+\mathrm{Cl}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\mathrm{g})$
(ii) $3 \mathrm{BaCl}_{2}$ (aq) $+\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}(\mathrm{aq}) \rightarrow 3 \mathrm{BaSO}_{4}(\mathrm{~s})+2 \mathrm{AlCl}_{3}(\mathrm{aq})$
(iii) $2 \mathrm{Na}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow 2 \mathrm{NaOH}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})$
(i) $\mathrm{H}_{2}(\mathrm{~g})+\mathrm{Cl}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\mathrm{g})$
(ii) $3 \mathrm{BaCl}_{2}$ (aq) $+\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}(\mathrm{aq}) \rightarrow 3 \mathrm{BaSO}_{4}(\mathrm{~s})+2 \mathrm{AlCl}_{3}(\mathrm{aq})$
(iii) $2 \mathrm{Na}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow 2 \mathrm{NaOH}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g})$
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