Que 1: Translate the following statements into balanced chemical equations
a. Ammonia gas (NH3) plus oxygen gas yields nitrogen monoxide gas plus water vapour
b.Calcium hydroxide solution and carbon dioxide gas yields solid calcium carbonate and
liquid water.

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Solution

Balanced chemical equations for the said reactions are as follows
(a) 4NH₃ (g) + 5O₂ (g) â†’ 4NO (g) + 6H₂O (g)
(b) Ca(OH)₂ (aq) + CO₂(g) â†’ CaCO₃ (s) + H₂O (l)

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Calcium (solid) + Water (liquid) \underset{}{\to} Calcium hydroxide (solution) + Hydrogen (gas)

Sulphur dioxide (gas) + Oxygen (gas) \underset{}{\to} Sulphur trioxide (gas)

Write a balanced chemical equation for each of the following :

1. Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.

2. Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas.

3. Methyl alcohol burns in air to form carbon dioxide and water.

4. Liquid hydrogen peroxide decomposes to give water and oxygen gas.

5. Aluminium hydroxide reacts with sulphuric acid to give ammonium sulphate and water.

6. Aluminium sulphate solution reacts with sodium hydroxide to form a precipitate of aluminium hydroxide.

Balance the following chemical equation

Calcium hydroxide + carbon dioxide -calcium carbonate + water

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