Propene is the product obtained by dehydration of

Options

A. 2-propanol
B. 1-propanol
C. Propanal
D. n-propyl alcohol

Answer

To determine the alcohol that, upon dehydration, yields propene, we need to analyze the dehydration process and the structure of propene.

### Step-by-Step Solution:

1. **Identify the Structure of Propene**:
- Propene is an alkene with the molecular formula C3H6. Its structure can be represented as CH2=CH-CH3.

2. **Understand Dehydration**:
- Dehydration is the process of removing water (H2O) from an alcohol to form an alkene. This typically occurs in the presence of an acid catalyst.

3. **Identify Possible Alcohols**:
- The alcohols that can be dehydrated to form propene include:
- 1-Propanol (n-propanol)
- 2-Propanol (isopropanol)

4. **Dehydration of 1-Propanol**:
- When 1-Propanol (CH3-CH2-CH2OH) undergoes dehydration, it forms propene (CH2=CH-CH3) through the elimination of water. However, this is not the most favorable pathway since it would lead to the formation of a primary carbocation, which is less stable.

5. **Dehydration of 2-Propanol**:
- When 2-Propanol (CH3-CHOH-CH3) is dehydrated, it forms propene. The dehydration mechanism involves the formation of a more stable secondary carbocation, followed by the elimination of a β-hydrogen to yield propene.

6. **Conclusion**:
- The dehydration of 2-Propanol is the most straightforward route to produce propene. Thus, the correct answer to the question is that propene is obtained by the dehydration of 2-Propanol.

### Final Answer:
Propene is the product obtained by the dehydration of 2-Propanol (isopropanol).

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