MDCAT Chemistry MCQ #405

When Acetaldehyde is treated with a few drops of concentrated Sulfuric acid, it polymerizes into Paraldehyde. How many Acetaldehyde units constitute one Paraldehyde molecule?

MDCAT Chemistry MCQ #405

  1. Question 1

    Q1. When Acetaldehyde is treated with a few drops of concentrated Sulfuric acid, it polymerizes into Paraldehyde. How many Acetaldehyde units constitute one Paraldehyde molecule?

    • A) 1 molecule
    • B) 4 molecules
    • C) 2 molecules
    • D) 3 molecules

    Answer: 3 molecules

    Explanation: Paraldehyde is a cyclic trimer of Acetaldehyde (C2H4O)3, thus 3 molecules. Option A refers to the monomer itself.