Dehalogenation of ethyl tetrahalide will give____________________?
Correct answer: B. ethyne
- A. ethene
- B. ethyne
- C. ethyl halide
- D. all of the above are possible
Explanation
Complete dehalogenation of a tetrahaloethane removes four halogen atoms from the two-carbon framework, creating two pi bonds and forming ethyne, C2H2. Students may choose ethene by assuming one removal step is involved, but a tetrahalide requires sufficient dehalogenation to produce the triple bond.
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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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