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Which outcome occurs when lowering the initial temperatures in ethylene cracking?

A)Smaller equilibrium rate constant value
B)Increased concentration of acetylene formation
C)Enhanced overall reaction conversion rate
D)Favored formation of coke byproduct

💡 Explanation

Lowering temperatures reduces vibrational energy; this decreases the Arrhenius equation's rate constant value because fewer molecules overcome the activation energy barrier, therefore less ethylene reacts at that equilibrium rather than cracking efficiently.

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