Question

critical temperature of ammonia and carbon dioxide are 405.5k and 304.10k respectively which of these gas3s will liquefy first when you start cooling from 500k to thier critical temperature

Answer 1

At or above the critical temperature, gases cannot be liquified.
Ammonia will liquify first

Answer 2

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• Ammonia will liquify first because its critical temperature will be reached first.
• Liquefication of ${CO2}$will require more cooling.