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← ScienceWhich outcome results when a catalyst degrades during polymerization?
A)Reduced polymer chain average length✓
B)Increased rate of monomer conversion
C)Narrower polymer molecular weight distribution
D)Enhanced polymer stereoregularity control
💡 Explanation
Catalyst degradation slows down chain initiation, because fewer chains start while active chain concentration also lowers. Therefore, more monomers add per starting chain, thus increasing average length ends early. Rather than increased conversion, overall reaction slows.
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