`LiAlH_(4)` converts acetic acid into-

Options

A. Acetaldehyde
B. Methane
C. Ethyl alcohol
D. Methyl alcohol

Answer

To solve the question of what `LiAlH4` (Lithium Aluminium Hydride) converts acetic acid into, we can follow these steps:

### Step 1: Identify the Reactants
- We have acetic acid, which is represented by the chemical formula \( CH_3COOH \).
- We are using Lithium Aluminium Hydride \( (LiAlH_4) \), a strong reducing agent.

**Hint:** Remember that acetic acid is a carboxylic acid.

### Step 2: Understand the Reaction
- Lithium Aluminium Hydride is known for its ability to reduce carboxylic acids to alcohols.
- The general reaction for the reduction of a carboxylic acid by \( LiAlH_4 \) is that it converts the acid group \( -COOH \) into an alcohol group \( -OH \).

**Hint:** Recall that reduction involves the gain of hydrogen or the loss of oxygen.

### Step 3: Perform the Reduction
- When acetic acid \( (CH_3COOH) \) is treated with \( LiAlH_4 \), the carboxylic acid group is reduced to form an alcohol.
- The product formed from the reduction of acetic acid is ethyl alcohol, which has the chemical formula \( CH_3CH_2OH \).

**Hint:** Think about the structure of the product and how the carboxylic acid group changes during the reduction.

### Step 4: Identify the Correct Option
- From the options given:
1. Acetaldehyde
2. Methane
3. Ethyl Alcohol
4. Methyl Alcohol
- Since we established that the product is ethyl alcohol, the correct answer is option 3, Ethyl Alcohol.

**Hint:** Verify your answer by checking the structure of the product against the options provided.

### Final Answer:
LiAlH4 converts acetic acid into Ethyl Alcohol \( (CH_3CH_2OH) \).