MDCAT Chemistry MCQ #4321

Which gas has the lowest compressibility factor (Z) at high pressure due to negligible intermolecular attractions?

MDCAT Chemistry MCQ #4321

  1. Question 1

    Q1. Which gas has the lowest compressibility factor (Z) at high pressure due to negligible intermolecular attractions?

    • A) H2
    • B) O2
    • C) CH4
    • D) NH3

    Answer: H2

    Explanation: H2’s weak attractions lead to Z < 1. NH3’s attractions cause Z > 1 at high pressure.