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Explain Destructive distillation of coal.

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Answer 1

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Explain Destructive distillation of coal

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Destructive distillation of coal -

• The process of heating coal in the absence of air to obtain useful product is called destructive distillation of coal .

• Various useful products obtained are - Coke , coal gas , coal tar, ammoniacal liquor

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• Finely powdered coal taken in a test tube is heated

• As a coal breakdown coke , coal tar , ammonia and coal gas are produced

• Coal tar collects at the bottom of the second test tube and coal gas get escaped out through the side tube

• The ammonia produced the absorbed in water forming ammoniacal liquor ( ammonium hydroxide )

• The black residue left in the first test tube is called coke .

[ Note - See the attachment ]

Answer 2

When a substance is heated in the absence of air, the process is called destructive distillation. It results in the decomposition of the substance, bearing carbon rich residue. Destructive distillation of coal produces coke, coal tar, coal gas and ammonia solution