MDCAT Chemistry MCQ #311

Acetaldehyde is reacted with phosphorus pentachloride (PCl5). What is the IUPAC name of the resulting halogenated organic product?

MDCAT Chemistry MCQ #311

  1. Question 1

    Q1. Acetaldehyde is reacted with phosphorus pentachloride (PCl5). What is the IUPAC name of the resulting halogenated organic product?

    • A) 1,2-dichloroethane
    • B) 1,1-dichloroethane
    • C) Chloroethane
    • D) Trichloroethane

    Answer: 1,1-dichloroethane

    Explanation: Aldehydes react with PCl5 to produce gem-dichlorides where two chlorine atoms replace the oxygen. 1,2-dichloroethane is a vicinal dihalide formed from ethene.