Question

What is the chemical formula for coal gas?

Answer 1

There is no chemical formula for coal gas. It composed of variety of gases in different composition which depends on the type of coal and temperature of carbonisation. The constituent gases are- hydrogen, methane, carbon monoxide and ethylene.

Answer 2

There is no particular chemical formula for coal gas but it has different gases in it.

Formation of coal:

When the plants and trees are buried, the remains of dead and decaying bodies of plants and animals deposit on the bottom forming a layer. These matters get hardened to form coal.

The stages of coal formation are:

• Peat
• Lignite
• Bituminous coal
• Anthracite
• Graphite

Coal gas is a mixture that consists of gases namely hydrogen (H₂), methane (CH₄), carbon monoxide (CO), and ethylene (C₂H₄). These gases are obtained from the distillation of bituminous coal.

The applications of coal are:

• It is used as fuel in industries, houses, etc.
• It is used to produce hydroelectricity.
• It is used to manufacture explosives, cosmetics, and fertilizers.

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