When propane is subjected to the treatment with fuming nitric acid at 673 K which of the following will not form ?

Options

A. 1-Nitropropane
B. 2-Nitropropane
C. Nitromethane
D. Nitrohexane

Explanation

To solve the question of which compound will not form when propane is treated with fuming nitric acid at 673 K, we can follow these steps:

### Step 1: Understand the Reactants
Propane (C3H8) is an alkane with three carbon atoms. Fuming nitric acid (HNO3) is a strong nitrating agent that can introduce nitro groups (-NO2) into organic compounds.

**Hint:** Identify the structure of propane and the properties of fuming nitric acid.

### Step 2: Identify Possible Reactions
When propane reacts with fuming nitric acid, it undergoes nitration. The reaction can lead to the formation of nitroalkanes by substituting hydrogen atoms with nitro groups.

**Hint:** Recall that nitration involves the substitution of hydrogen atoms in hydrocarbons with nitro groups.

### Step 3: Determine the Products
1. **1-Nitropropane (C3H7NO2)**: This is formed by the substitution of a hydrogen atom at the first carbon.
2. **2-Nitropropane (C3H7NO2)**: This is formed by the substitution of a hydrogen atom at the second carbon.
3. **Nitromethane (CH3NO2)**: This can also be formed if a hydrogen atom from a methyl group is substituted.

**Hint:** Write down the structures of the potential products to visualize the substitutions.

### Step 4: Consider the Options
The question asks which compound will not form. The possible products from the nitration of propane are:
- 1-Nitropropane
- 2-Nitropropane
- Nitromethane

However, nitrohexane (C6H13NO2) cannot be formed from propane because it would require the addition of three more carbon atoms, which is not possible through nitration.

**Hint:** Compare the number of carbon atoms in the reactant (propane) and the options provided.

### Step 5: Conclusion
The compound that will not form when propane is treated with fuming nitric acid at 673 K is **nitrohexane**.

**Final Answer:** Nitrohexane will not form.

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