MDCAT Chemistry MCQ #413

When comparing physical properties in a PTB lab, what is the approximate boiling point of Acetaldehyde at standard atmospheric pressure?

MDCAT Chemistry MCQ #413

  1. Question 1

    Q1. When comparing physical properties in a PTB lab, what is the approximate boiling point of Acetaldehyde at standard atmospheric pressure?

    • A) 0 degrees Celsius
    • B) 21 degrees Celsius
    • C) 56 degrees Celsius
    • D) 100 degrees Celsius

    Answer: 21 degrees Celsius

    Explanation: Acetaldehyde has a boiling point of 21°C, while Acetone is 56°C due to higher molecular mass and dipole-dipole forces. Option A is too low.