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Which outcome occurs when rapid hydrocarbon vapor depressurization exists?

A)Auto-refrigeration results in hydrate formation
B)Increased catalytic activity reduces efficiency
C)Material embrittlement prevents further expansion
D)Oxidation stability decreases significantly immediately

💡 Explanation

Auto-refrigeration results from *isenthalpic expansion* because energy remains constant; therefore, temperature drops, causing hydrates to form. This is because depressurization cools the vapor, rather than increasing catalytic activity and other scenarios occur in different operating conditions.

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