Name the functional group present in HCOOH.

Explanation

To determine the functional group present in HCOOH, we can follow these steps:

### Step 1: Write the molecular formula
The molecular formula for the compound is HCOOH.

### Step 2: Identify the structure
When we break down HCOOH, we can see that it consists of a carbon atom (C) bonded to two oxygen atoms (O) and one hydrogen atom (H). The structure can be represented as:
```
O
||
H - C - O - H
```

### Step 3: Analyze the functional group
In the structure, we can see that the carbon atom is bonded to a hydroxyl group (-OH) and a carbonyl group (C=O). This combination of a carbonyl group and a hydroxyl group attached to the same carbon atom is characteristic of a carboxylic acid.

### Step 4: Name the functional group
Based on the analysis, we can conclude that the functional group present in HCOOH is the carboxylic acid group, denoted as -COOH.

### Step 5: Identify the compound name
The compound HCOOH is commonly known as formic acid or methanoic acid.

### Final Answer
The functional group present in HCOOH is the carboxylic acid group (-COOH).

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