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← ScienceWhich outcome results when rapid adiabatic decompression is suddenly applied to saturated CO2?
A)Solid CO2 (dry ice) forms✓
B)Gaseous CO2 temperature increases
C)Liquid CO2 enters supercritical phase
D)CO2 molecules maintain initial liquid phase
💡 Explanation
Dry ice forms because adiabatic decompression enforces phase change; the Joule-Thomson effect cools the gas, leading to rapid freezing rather than simply reducing pressure. Therefore, CO2 molecules transition directly to solid form, rather than altering temperature or entering liquid or supercritical phase.
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