Asked in Premeth Test 15 — Organic Chemistry Concepts and Hydrocarbons (17 March 2025) 2025

Alkynes are slightly _ in nature.

Correct answer: A. Acidic

  • A. Acidic
  • B. Basic
  • C. Neutral
  • D. None

Explanation

Alkynes are slightly acidic in nature due to the presence of a hydrogen atom attached to a highly electronegative carbon-carbon triple bond (sp hybridized) that leads to a polarization of the sigma bond, making the hydrogen atom more susceptible to ionization. Option B is incorrect because alkynes are not basic and do not readily accept protons. Option C is incorrect as alkynes exhibit acidic properties. Option D is incorrect as alkynes do exhibit acidic behavior.

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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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