Aspirin is a pain relieving drug.It is an 2-Alkanoyloxybenzoic acid derivative having molecular formula `(C_9H_8O_4)` . How many `sp^2` carbon atom are present in aspirin.

Explanation

To determine the number of sp² carbon atoms in aspirin (C₉H₈O₄), we will follow these steps:

### Step 1: Understand the Structure of Aspirin
Aspirin is known as acetylsalicylic acid, which is a derivative of salicylic acid. Its structure consists of a benzene ring, an acetyl group, and a carboxylic acid group.

### Step 2: Draw the Structure of Aspirin
1. **Benzene Ring**: The benzene ring has 6 carbon atoms, all of which are sp² hybridized.
2. **Acetyl Group**: The acetyl group (-COCH₃) is attached to one of the carbons of the benzene ring. The carbon in the carbonyl (C=O) of the acetyl group is also sp² hybridized.
3. **Carboxylic Acid Group**: The carboxylic acid group (-COOH) has a carbon that is sp² hybridized as well.

### Step 3: Count the sp² Hybridized Carbons
- **From the Benzene Ring**: 6 sp² carbons
- **From the Acetyl Group**: 1 sp² carbon (the carbonyl carbon)
- **From the Carboxylic Acid Group**: 1 sp² carbon

### Step 4: Total Count of sp² Carbons
Adding these together:
- 6 (from benzene) + 1 (from acetyl) + 1 (from carboxylic acid) = 8 sp² carbon atoms.

### Final Answer
The total number of sp² carbon atoms present in aspirin is **8**.

---