Which of the following is unsaturated compound?

Options

A. `C_(6)H_(14)`
B. `C_(4)H_(8)`
C. `C_(3)H_(7)OH`
D. `CH_(3)OH`

Answer

To determine which of the given compounds is unsaturated, we need to analyze the molecular formulas provided. Unsaturated compounds contain double or triple bonds, while saturated compounds only have single bonds.

### Step-by-Step Solution:

1. **Identify the Molecular Formulas**:
Let's assume we have three molecular formulas to analyze:
- C6H14
- C4H8
- C3H8

2. **Analyze C6H14**:
- **Count Carbons and Hydrogens**: This compound has 6 carbons and 14 hydrogens.
- **Determine Saturation**: The general formula for alkanes (saturated hydrocarbons) is CnH2n+2. For n=6, the formula would be C6H14, which matches. Therefore, C6H14 is a saturated compound.

**Hint**: Use the formula CnH2n+2 to check if a compound is saturated.

3. **Analyze C4H8**:
- **Count Carbons and Hydrogens**: This compound has 4 carbons and 8 hydrogens.
- **Determine Saturation**: For n=4, the formula for alkanes would be C4H10. Since C4H8 has 2 fewer hydrogens than C4H10, it indicates the presence of a double bond (or ring structure). Therefore, C4H8 is an unsaturated compound.

**Hint**: If the number of hydrogens is less than the alkane formula, the compound is likely unsaturated.

4. **Analyze C3H8**:
- **Count Carbons and Hydrogens**: This compound has 3 carbons and 8 hydrogens.
- **Determine Saturation**: For n=3, the formula for alkanes would be C3H8, which matches. Therefore, C3H8 is a saturated compound.

**Hint**: Again, check if the number of hydrogens matches the alkane formula to determine saturation.

5. **Conclusion**:
After analyzing all the compounds, we find that:
- C6H14 is saturated.
- C4H8 is unsaturated.
- C3H8 is saturated.

Therefore, the unsaturated compound among the options is **C4H8**.

### Final Answer:
The unsaturated compound is **C4H8**.