When excess of HCI is added to acetylene, the product is:
Correct answer: C. 1,2 - dichloroethane
- A. Vinyl chloride
- B. Ethyl chloride
- C. 1,2 - dichloroethane
- D. 1,1 - dichloroethane
Explanation
When excess hydrochloric acid (HCl) is added to acetylene (C2H2), the product formed is 1,2 - dichloroethane (C2H4Cl2). This reaction involves the addition of two molecules of HCl to the triple bond of acetylene, resulting in the formation of 1,2 - dichloroethane. Therefore, option c is correct.
This question appeared on the KMU Centralized Admission Test 2022 paper, which you can sit online with every answer explained.
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About Alkynes
Alkynes are unsaturated hydrocarbons containing a carbon-carbon triple bond, with sp-hybridised carbon atoms and a linear arrangement around the bond. The content includes nomenclature, preparation, acidity of terminal alkynes, and addition reactions with hydrogen, halogens, hydrogen halides and water, as well as oxidation.
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