Which of the following is not a step in a free radical chain reaction?
A - Scottish Highers Chemistry - Question 9 - 2017
Question 9
Which of the following is not a step in a free radical chain reaction?
A. Activation
B. Initiation
C. Propagation
D. Termination
Worked Solution & Example Answer:Which of the following is not a step in a free radical chain reaction?
A - Scottish Highers Chemistry - Question 9 - 2017
Step 1
A. Activation
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Answer
In the context of free radical chain reactions, 'Activation' is not considered a step. The main steps involved are Initiation, Propagation, and Termination. The initiation step generates free radicals, propagation involves reactions of free radicals with substrates, and termination involves the recombination of radicals.
Step 2
B. Initiation
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Answer
Initiation is the first step in a free radical chain reaction where free radicals are generated, often through heat or light.
Step 3
C. Propagation
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Propagation is the step where the free radicals react with substrates, resulting in the formation of new radicals and continuing the chain reaction.
Step 4
D. Termination
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Answer
Termination is the final step where two free radicals combine to form stable products, effectively ending the chain reaction.
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