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Which 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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