Question

Ethyne vapor heated strongly in iron tube.​

Answer 1

Answer. When ethyne gas is passed through red hot iron tube, benzene (C6H6) is formed. Benzene is formed by the polymerisation of ethylene. Three molecules of ethyne combines to give one molecule of benzene.

Answer 2

Answer:

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When 3 molecules of ethyne is passed through red hot iron tube at 873K it undergoes cyclic polymerization to form benzene.