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← ScienceWhich outcome occurs when rapidly compressing a sealed volume predominately containing methane?
A)Increase due to molecular kinetic differences
B)Cooling due to adiabatic expansion work
C)Autoignition due to radical chain branching✓
D)Condensation due to decreased average free-path
💡 Explanation
Rapid compression generates heat sufficient to initiate autoignition which starts molecular radical chain branching; therefore, autoignition occurs, rather than simple heating alone, because it exceeds the ignition temperature of methane under high pressure.
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