Which reagent can convert acetic acid into ethanol?

Options

A. `Na+` alcohol
B. `LiAlH_(4)+`ether
C. `H_(2)+Pt`
D. `Sn+HCl`

Answer

To convert acetic acid (CH3COOH) into ethanol (CH3CH2OH), we need to follow these steps:

### Step 1: Identify the Reactants and Products
- **Reactant**: Acetic acid (CH3COOH)
- **Product**: Ethanol (CH3CH2OH)

### Step 2: Understand the Reaction Type
- The conversion of acetic acid to ethanol is a reduction reaction. In this process, the carboxylic acid (acetic acid) is reduced to an alcohol (ethanol).

### Step 3: Choose a Suitable Reducing Agent
- To reduce acetic acid to ethanol, we need a strong reducing agent. Common strong reducing agents include:
- Lithium aluminum hydride (LiAlH4)
- Sodium borohydride (NaBH4) is not strong enough for this reaction.

### Step 4: Write the Reaction
- The reaction can be represented as:
\[ \text{CH}_3\text{COOH} + \text{LiAlH}_4 \rightarrow \text{CH}_3\text{CH}_2\text{OH} + \text{by-products} \]
- In the presence of ether, LiAlH4 acts as a strong reducing agent to convert acetic acid to ethanol.

### Step 5: Conclusion
- Therefore, the reagent that can convert acetic acid into ethanol is **Lithium aluminum hydride (LiAlH4)**.

### Final Answer
- The correct reagent to convert acetic acid into ethanol is **LiAlH4**.

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