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When 1,1,1-trichloroethane is treated with silver powder, the principal organic product obtained is

1. Acetylene
2. Ethene
3. 2-Butyne
4. 2-Butene

Correct answer: 2-Butyne

Solution

1,1,1-trichloroethane (CH3CCl3) with Ag powder undergoes Wurtz-type coupling at the CCl3 carbons, joining two units and eliminating halogen to form CH3-C(=)C-CH3, i.e. 2-butyne. Answer: option 2.

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