Isopropyl bromide on Wurtz reaction gives

Options

A. Hexane
B. Propane
C. 2, 3-Dimethylbutane
D. Neohexane.

Answer

To determine the product of isopropyl bromide when it undergoes a Wurtz reaction, we can follow these steps:

### Step 1: Understand the Wurtz Reaction
The Wurtz reaction involves the coupling of alkyl halides in the presence of sodium metal to form alkanes. The general reaction can be represented as:
\[ 2 R-X + 2 Na \rightarrow R-R + 2 NaX \]
where \( R \) is an alkyl group and \( X \) is a halogen (in this case, bromine).

### Step 2: Identify the Structure of Isopropyl Bromide
Isopropyl bromide (also known as 2-bromopropane) has the following structure:
- It consists of a three-carbon chain with a bromine atom attached to the second carbon.
- The structure can be represented as:
\[ CH_3-CHBr-CH_3 \]

### Step 3: Write the Reaction Equation
When isopropyl bromide undergoes the Wurtz reaction, we take two moles of isopropyl bromide:
\[ 2 CH_3-CHBr-CH_3 + 2 Na \rightarrow R-R + 2 NaBr \]

### Step 4: Determine the Product
In the Wurtz reaction, the two isopropyl groups will couple together. The two carbon chains will combine to form a new carbon-carbon bond, resulting in:
\[ CH_3-CH(CH_3)-CH_3 + CH_3-CH(CH_3)-CH_3 \rightarrow C_6H_{14} \]
This product is hexane, which has the structure:
\[ CH_3-CH_2-CH_2-CH_2-CH_2-CH_3 \]

### Step 5: Analyze Other Options
- **Propane (C3H8)**: This cannot be formed as it has fewer carbon atoms than the reactants.
- **2,3-Dimethylbutane (C5H12)**: This also cannot be formed because it has fewer carbon atoms than the reactants.
- **Neohexane**: This is a specific branched isomer of hexane, but it is not formed in this reaction.

### Conclusion
The main product formed from the Wurtz reaction of isopropyl bromide is **hexane**.

### Summary of Steps:
1. Understand the Wurtz reaction mechanism.
2. Identify the structure of isopropyl bromide.
3. Write the reaction equation.
4. Determine the product formed from the reaction.
5. Analyze other options to confirm they are not correct.