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The conversion of pi-bond to sigma bond during the chain propagation releases the energy of _________ K.cal/mole.(a) 10(b) 30(c) 40(d) 20The question was posed to me in homework.The question is from Mechanism of Polymerization in division High Polymers and Plastics of Applied Chemistry

Answer»

Right answer is (d) 20

To explain I would SAY: The conversion of the pi-bond into the SIGMA bond during the chain polymerisation releases the energy of the 20K.cal/mole. An INITIATOR is needed to START the polymerisation reaction.



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