Ethene is prepared industrially by

Explanation

Ethene is produced from cracking which involves breaking up large hydrocarbon molecules into smaller and more useful bits. This is achieved by using high temperatures and pressures without a catalyst.

C₁₅H₃₂ → 2C₂H₄ + C₃H₆ + C₈H₁₄
......Δheat...ethene........propene.........octane

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