Alkanes react with an excess of air or oxygen to give :

Alkene

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Carbon dioxide gas

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Hydrogen gas

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Alkyne

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Solution

The correct option is B
Carbon dioxide gas

Alkanes react with an excess of air or oxygen to give water vapour, carbon dioxide gas, and energy.

Example:

$2 C_{2} H_{6} + 7 O_{2} ⟶ 4 C O_{2} + 6 H_{2} O$

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Similar questions

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.

Alkanes readily burn in excess of air or Oxygen to give

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.

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