Question

how will you prepare acetylene from 1,1-dichloroethane​

Answer 1

Explanation:

Ethanol heated in the presence of H2S04 gives Ethene.

Ethene when treated with CCl4 gives 1,2-dichloroethane.

1,2-dichloroethane.on treatment with alcoholic KOH and heat gives Ethyne. (beta elimination is done twice)

Ethyne on reaction with 2 moles of HCl gives 1,1- dichloroethane (markovnikov's addition is done twice).

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