Chlorination of methane is believed to proceed through free radical mechanism. Which of the following is propagation step?
Correct answer: B. CH3 + Cl2 -----> CI + CH3-CI
- A. CI-CI ---->2Cl
- B. CH3 + Cl2 -----> CI + CH3-CI
- C. CH3+ HCl ----->H'+ H3C-Cl
- D. All of these
Explanation
Option B is correct.The propagation step in the chlorination of methane is the step where a free radical reacts with a reactant molecule to form a new product and another free radical. The propagation step for the chlorination of methane is: Cl + CH4 → CH3Cl + Cl In this step, a chlorine radical reacts with a methane molecule to form chloromethane and another chlorine radical. The chlorine radical is then free to react with another methane molecule, and the reaction continues in a chain reaction.Options A, C, and D are incorrect as they do not represent the propagation step accurately. Option A describes the initiation step, Option C involves a different reaction, and Option D is a misleading choice as not all options are correct.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
Practise Chemistry of Hydrocarbons
1,091 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Chemistry of Hydrocarbons questions
Methane when burnt in the presence of metallic catalyst (Cu), at high temperature (400°C) and pressure (200atm), which of the following is the ultimate product?
The reaction of chlorine with methane is carried out in the presence of diffused sunlight. What is function of the light?
X→ CI2/FeCI3 → Y→ HNO3+H2 SO4 → Z, Z in this reaction is possibly
Nitrobenzene may be prepared by reacting benzene with a mixture of conc. H2SO4 and conc. HNO3 at 55°C. Which of the following best explains the role of conc. H2SO4?
β-elimination is competitive to nucleophilic substitution reaction. It. has all of the following conditions for reaction EXCEPT:
All the following are dehydrating agents EXCEPT: