H₂C -CH₂ H-Br:

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The first step of the addition of a hydrogen halide to an alkene is the addition of H+ to an sp2 carbon to form a carbocation. Predict the carbocation formed in the following reaction and draw the mechanism of its formation.

Edit the reaction by drawing all steps in the appropriate boxes and connecting them with reaction arrows. Add charges where needed. Electron-flow arrows should start on an atom or a bond and should end on an atom, bond, or location where a new bond should be created.
### Alkene Addition Reaction with Hydrogen Bromide

#### Reactants:
- **Propene (CH3-CH=CH2)**
- **Hydrogen Bromide (HBr)**

#### Reaction Overview:
This diagram represents an alkene addition reaction where propene reacts with hydrogen bromide (HBr). The arrow between the two boxes indicates that the reaction yields a product through the addition of the HBr across the carbon-carbon double bond of the propene.

#### Detailed Explanation:
- The structure on the left shows the molecule of propene featuring a double bond between the second and third carbon atoms. This double bond is the site of reactivity.
- Hydrogen bromide adds across the double bond. The hydrogen atom (H) bonds with one of the carbon atoms originally involved in the double bond, while the bromine atom (Br) bonds with the other.

#### Color Key for Atoms:
- **H (Hydrogen):** Black
- **C (Carbon):** Black
- **Br (Bromine):** Brown

This type of reaction is fundamental in organic chemistry, particularly in the field of petrochemicals and synthetic organic compounds.
Transcribed Image Text:### Alkene Addition Reaction with Hydrogen Bromide #### Reactants: - **Propene (CH3-CH=CH2)** - **Hydrogen Bromide (HBr)** #### Reaction Overview: This diagram represents an alkene addition reaction where propene reacts with hydrogen bromide (HBr). The arrow between the two boxes indicates that the reaction yields a product through the addition of the HBr across the carbon-carbon double bond of the propene. #### Detailed Explanation: - The structure on the left shows the molecule of propene featuring a double bond between the second and third carbon atoms. This double bond is the site of reactivity. - Hydrogen bromide adds across the double bond. The hydrogen atom (H) bonds with one of the carbon atoms originally involved in the double bond, while the bromine atom (Br) bonds with the other. #### Color Key for Atoms: - **H (Hydrogen):** Black - **C (Carbon):** Black - **Br (Bromine):** Brown This type of reaction is fundamental in organic chemistry, particularly in the field of petrochemicals and synthetic organic compounds.
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