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← ScienceWhich outcome occurs when rapid depressurization of liquid carbon dioxide?
A)Dry ice generation via adiabatic expansion✓
B)Increased gas pressure; spontaneous ignition
C)Supercritical fluid transitions to plasma
D)Vapor pressure increases; boiling occurs
💡 Explanation
Adiabatic expansion rapidly cools the CO2, and pressure drops below the triple point, causing deposition of solid dry ice directly from the gas phase, because the energy removal drives a phase transition. Therefore, solid dry ice forms, rather than maintaining liquid, because the triple point prevents it.
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