When n-hexane is heated with anhydrous `AlCl_3` and HCl gas, the major product obtained is

Options

A. 1-chlorohexane
B. 2-chlorohexane
C. 3-chlorohexane
D. mixture of 2-methylpentane and 3-methylpentane

Explanation

To solve the question of what major product is obtained when n-hexane is heated with anhydrous AlCl3 and HCl gas, we can follow these steps:

### Step 1: Understand the Reaction
When n-hexane (C6H14) is treated with anhydrous AlCl3 and HCl, we are looking at a Friedel-Crafts alkylation reaction. AlCl3 acts as a Lewis acid and helps in generating a more reactive carbocation from the alkane.

### Step 2: Structure of n-Hexane
The structure of n-hexane is:
```
CH3-CH2-CH2-CH2-CH2-CH3
```
This is a straight-chain alkane with six carbon atoms.

### Step 3: Formation of Carbocation
When n-hexane is heated with AlCl3 and HCl, a carbocation can be formed. The most stable carbocation that can be formed from n-hexane is the secondary carbocation.

### Step 4: Possible Carbocations
The possible carbocations that can be formed from n-hexane are:
- 1-hexyl cation (primary, less stable)
- 2-hexyl cation (secondary, more stable)
- 3-hexyl cation (tertiary, more stable)

However, in this case, the secondary carbocation (2-hexyl cation) is the most significant due to its stability.

### Step 5: Alkylation
The stable carbocation can then react with the HCl to form an alkyl halide. The alkylation can lead to the formation of branched products.

### Step 6: Identify the Major Products
From the reaction, the major products formed will be:
- 2-methylpentane
- 3-methylpentane

### Conclusion
Thus, the major products obtained from the reaction of n-hexane with anhydrous AlCl3 and HCl are a mixture of 2-methylpentane and 3-methylpentane.

### Final Answer
The major product obtained is a mixture of 2-methylpentane and 3-methylpentane.

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