Write IUPAC names of the following compounds :
`CH_(3)CH_(2)COOH`

Answer

To find the IUPAC name of the compound `CH₃CH₂COOH`, we will follow these steps:

### Step 1: Identify the Parent Chain
The first step in naming an organic compound is to identify the longest continuous carbon chain, which will serve as the parent chain. In this case, the compound has three carbon atoms.

### Step 2: Determine the Functional Group
The functional group present in the compound is the carboxylic acid group (`-COOH`). This is important because it will influence the suffix of the compound's name.

### Step 3: Number the Carbon Atoms
When numbering the carbon atoms, we start from the end of the chain that is closest to the functional group to give it the highest priority. In this case, we will number from the right (where the `-COOH` group is located):

- C1: `COOH`
- C2: `CH₂`
- C3: `CH₃`

### Step 4: Assign the Parent Name
Since there are three carbon atoms in the longest chain, the base name will be derived from "propane".

### Step 5: Add the Suffix for the Functional Group
Because the compound contains a carboxylic acid functional group, we replace the "e" in "propane" with "oic acid" to indicate that it is a carboxylic acid.

### Step 6: Combine the Name
Thus, the IUPAC name of the compound `CH₃CH₂COOH` is **Propanoic Acid**.

### Final Answer:
**Propanoic Acid**

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