Associate Safety Professional Practice Exam

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What is acetylene, also known as ethyne, categorized as in terms of hydrocarbon class?

  1. Alkane

  2. Alkene

  3. Alkyne

  4. Saturated hydrocarbon

The correct answer is: Alkyne

Acetylene, also referred to as ethyne, belongs to the class of hydrocarbons known as alkynes. Alkynes are characterized by having at least one triple bond between carbon atoms. In the case of acetylene, it consists of two carbon atoms connected by a triple bond, making it the simplest alkyne with the chemical formula C2H2. The classification of hydrocarbons is based on the types of bonds present. Alkanes have only single bonds (saturated), alkenes contain at least one double bond, and alkynes contain one or more triple bonds. Since acetylene features a triple bond, it distinctly falls into the alkyne category. Recognizing the structural differences among these classes is essential in organic chemistry, as it influences the reactivity and properties of the compounds.

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