General formula of alkyne is______________?
Correct answer: B. CnH2n - 2
- A. CnH2n + 2
- B. CnH2n - 2
- C. CnH2n
- D. CnH2n + 2
Explanation
An open-chain alkyne has the general formula CnH2n-2 because it contains one triple bond, which represents two degrees of unsaturation. Students may choose CnH2n, the formula for an alkene, because both families are unsaturated, while options a and d are the alkane formula and are duplicated.
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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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