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+ Br + Н— Br CH2 H2C=CH2 +

+ Br + Н— Br CH2 H2C=CH2 +

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Draw curly half-arrows to complete the mechanism for each of the two radical reactions shown below.

The image shows two chemical reactions involving radicals. 1. **First Reaction:** - **Reactants:** - Cyclohexane with a hydrogen atom (C₆H₁₁-H) - Bromine radical (·Br) - **Reaction Process:** - The bromine radical abstracts the hydrogen atom from cyclohexane. - **Products:** - Cyclohexyl radical (C₆H₁₁·) - Hydrogen bromide (H-Br) 2. **Second Reaction:** - **Reactants:** - Phenyl radical (·C₆H₅) - Ethylene (H₂C=CH₂) - **Reaction Process:** - The phenyl radical adds to one of the carbon atoms in ethylene, forming a new radical. - **Products:** - Ethylbenzene radical (C₆H₅-CH₂·) These reactions are typical examples of radical substitution and addition reactions, illustrating the reactivity of radical species in organic chemistry. Radicals, indicated by the dot (·), are species with unpaired electrons making them highly reactive.
Transcribed Image Text:The image shows two chemical reactions involving radicals. 1. **First Reaction:** - **Reactants:** - Cyclohexane with a hydrogen atom (C₆H₁₁-H) - Bromine radical (·Br) - **Reaction Process:** - The bromine radical abstracts the hydrogen atom from cyclohexane. - **Products:** - Cyclohexyl radical (C₆H₁₁·) - Hydrogen bromide (H-Br) 2. **Second Reaction:** - **Reactants:** - Phenyl radical (·C₆H₅) - Ethylene (H₂C=CH₂) - **Reaction Process:** - The phenyl radical adds to one of the carbon atoms in ethylene, forming a new radical. - **Products:** - Ethylbenzene radical (C₆H₅-CH₂·) These reactions are typical examples of radical substitution and addition reactions, illustrating the reactivity of radical species in organic chemistry. Radicals, indicated by the dot (·), are species with unpaired electrons making them highly reactive.
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