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 sulphur dioxide.

(C) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate. [3 MARKS]

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Solution

Each point: 1 Mark

1. $N_{2} (g) + 3 H_{2} (g) \to 2 {NH}_{3} (g)$
2. $2 H_{2} S (g) + 3 O_{2} (g) \to 2 H_{2} O (l) + 2 {SO}_{2} (g)$
3. $3 {BaCl}_{2} (aq) + {Al}_{2} {(SO}_{4})_{3} (aq) \to 2 {AlCl}_{3} (aq) + 3 {BaSO}_{4} (s)$

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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 sulphur dioxide.

(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

Translate the following statements into chemical equations and then balance the equations :

(a) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

(b) Phosphorus burns in oxygen to give phosphorus pentoxide.

(d) Aluminium metal replaces iron from ferric oxide, $F e_{2} O_{3}$ , giving aluminium oxide and iron.

(e) Barium chloride reacts with zinc sulphate to give zine chloride and barium sulphate.

Translate the following statement into chemical equation and then balance it :

Barium chloride solution reacts with aluminium sulphate solution to form a precipitate of barium sulphate and aluminium chloride solution.

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