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← ScienceWhich 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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