Give chemical test to distinguish :
Acetaldehyde and acetic acid.

Explanation

To distinguish between acetaldehyde and acetic acid, we can use the iodoform test. Here’s a step-by-step explanation of the process:

### Step 1: Understand the Structures
- **Acetaldehyde (CH3CHO)** contains the functional group CH3CO, which is capable of undergoing the iodoform reaction.
- **Acetic Acid (CH3COOH)** contains the carboxylic acid functional group (COOH) and does not have a free CH3CO group.

### Step 2: Perform the Iodoform Test
1. **Prepare the Test Solution**: Take a small amount of the sample (either acetaldehyde or acetic acid) and place it in a test tube.
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