Draw the functional isomer of `C_3H_6O` .

Answer

To draw the functional isomers of the molecular formula \( C_3H_6O \), we need to identify the different functional groups that can be formed with this formula. Here’s a step-by-step solution:

### Step 1: Determine the possible functional groups
The molecular formula \( C_3H_6O \) can correspond to several functional groups. The common functional groups that can be formed with this formula include:
- Aldehydes
- Ketones
- Ethers

### Step 2: Draw the ketone
1. **Ketone**: The simplest ketone with the formula \( C_3H_6O \) is acetone.
- Structure:
\[ CH_3 - C(=O) - CH_3 \]
- This structure has 3 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom.

### Step 3: Draw the aldehyde
2. **Aldehyde**: The simplest aldehyde with the formula \( C_3H_6O \) is propanal.
- Structure:
\[ CH_3 - CH_2 - C(=O) - H \]
- This structure also has 3 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom.

### Step 4: Check for ethers
3. **Ether**: For ethers, we need to check if we can form a valid structure with \( C_3H_6O \).
- A potential ether structure could be \( CH_3 - O - CH_2 - CH_3 \), but this gives us \( C_4H_{10}O \), which does not match \( C_3H_6O \).
- Therefore, ethers cannot be formed with this molecular formula.

### Conclusion
The functional isomers of \( C_3H_6O \) are:
1. **Acetone** (a ketone)
2. **Propanal** (an aldehyde)