Question

What happens when coal is burn in the presence of oxygen?

Answer 1

Answer:

Burning of coal occurs in presence of oxygen. The coal is heated in the absence of air which is known as destructive distillation of coal. This process result in the formation of by-products such as : coal gas, ammonia, coal tar and coke.

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Answer 2

Explanation:

Combustion reaction describes what happens when the charcoal is burned with fire in presence of oxygen. The charcoal contains carbon, which becomes carbon dioxide when reacted with oxygen with heat. Carbon dioxide in atmosphere reacts with water. When CO2 gas dissolves in water molecules, carbonic acid forms.