MDCAT Chemistry MCQ #4320

Which gas exhibits positive Joule-Thomson coefficient at room temperature, causing cooling upon expansion?

MDCAT Chemistry MCQ #4320

  1. Question 1

    Q1. Which gas exhibits positive Joule-Thomson coefficient at room temperature, causing cooling upon expansion?

    • A) H2
    • B) He
    • C) CO2
    • D) N2

    Answer: CO2

    Explanation: CO2 cools during expansion. H2 and He warm due to their molecular properties.