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← ScienceWhich consequence results when poisoning occurs in Zeigler-Natta catalysts?
A)Increased polymer chain branching
B)Reduced polymer molecular weight✓
C)Increased catalyst surface area
D)Enhanced catalyst stereospecificity
💡 Explanation
Poisoning deactivates the active sites of the Ziegler-Natta catalyst via irreversible binding, therefore, chain propagation is terminated earlier rather than propagating further, because the chain polymerization reaction stops; this results in reduced molecular weight.
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