Question

Critical temperature of ammonia and carbon dioxide are 405.5 k and 304.k respectively.which gas will liquefy first when you start cooling from 500k to critical temperature.

Answer 1

Ammonia will liquefy first when we cool it from 500 K

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.