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Critical temperatures of ammonia and carbon dioxide are 405.5 K and 304.10 K, respectively. Which of these gases will liquify first when you start cooling from 500 K to their critical temperature?

Option: 1


Option: 2

Carbon dioxide

Option: 3

Both will liquify at same time

Option: 4

Nothing can be predicted

Answers (1)


Since the critical temperature of ammonia is more than carbon dioxide, thus ammonia will liquify first as its critical temperature will be reached first. The liquefaction of carbon dioxide will require cooling to a lesser temperature.
Therefore, Option(1) is correct

Posted by

Sanket Gandhi

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