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  • Translate the following statements into chemical equations and then balance them. a Hydrogen gas combines with nitrogen to form ammonia. b Hydrogen sulphide gas burns in air to give water and sulpur dioxide. c Barium chloride reacts with aluminium s

Translate the following statements into chemical equations and then balance them. a Hydrogen gas combines with nitrogen to form ammonia. b Hydrogen sulphide gas burns in air to give water and sulpur dioxide. c Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate. d Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

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\\ (a) 3 H_{2}+N_{2} \Rightarrow 2 N H_{3}$ \\ (b) $2 H _{2} S +3 O _{2} \Rightarrow 2 H _{2} O +2 SO _{2}$ \\ (c) $3 BaCl _{2}+ Al _{2}\left( SO _{4}\right)_{3} \Rightarrow 2 AlCl _{3}+3 BaSO _{4}$ \\ (d) $3 K +2 H _{2} O \mapsto 2 KOH + H _{2}

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