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

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Solution

(a) Hydrogen gas combines with nitrogen to form ammonia.

$H_{2} (g) + N_{2} (g) \to N H_{3}$

The balanced equation for this reaction can be written as:

$3 H_{2} (g) + N_{2} (g) \to 2 N H_{3}$

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

$H_{2} S (g) + O_{2} (g) \to H_{2} O + S O_{2}$

The balanced equation for this reaction can be written as:

$2 H_{2} S (g) + 3 O_{2} (g) \to 2 H_{2} O + 2 S O_{2}$

(c) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

$B a C l_{2} + A l_{2} (S O_{4})_{3} \to A l C l_{3} + B a S O_{4} ↓$

The balanced equation for this reaction can be written as:

$3 B a C l_{2} + A l_{2} (S O_{4})_{3} \to 2 A l C l_{3} + 3 B a S O_{4} ↓$

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

$K + H_{2} O \to K O H + H_{2}$

The balanced equation for this reaction can be written as:

$2 K + 2 H_{2} O \to 2 K O H + H_{2}$

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Similar questions

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 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]

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 statement into chemical equation and then balance:

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

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