Gases are cooled in Joule-Thomson expansion, when it is _____________ inversion temperature?
Correct answer: A. Below
- A. Below
- B. At
- C. Above
- D. Either B. or C.
Explanation
A gas cools during Joule-Thomson expansion when its Joule-Thomson coefficient is positive, which occurs below the inversion temperature. At the inversion temperature there is no temperature change, while above it the gas generally warms on throttling.
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