When oxalic acid is heated, which one of the following is formed along with `CO_(2)` -

Options

A. Acetic acid
B. Glyceric acid
C. Formic acid
D. None of these

Answer

To solve the question of what is formed when oxalic acid is heated along with carbon dioxide (CO₂), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of Oxalic Acid**:
Oxalic acid has the chemical formula \( C_2H_2O_4 \) or \( (COOH)_2 \). It is a dicarboxylic acid, meaning it contains two carboxyl groups.

2. **Heating Oxalic Acid**:
When oxalic acid is heated, it undergoes thermal decomposition. This process involves breaking down the oxalic acid molecule into simpler substances.

3. **Identify the Products of Decomposition**:
The thermal decomposition of oxalic acid primarily produces carbon dioxide (CO₂) and another organic compound. The reaction can be represented as:
\[ C_2H_2O_4 \rightarrow CO_2 + HCOOH \]
Here, \( HCOOH \) is the formula for formic acid.

4. **Conclusion**:
Therefore, when oxalic acid is heated, it produces carbon dioxide (CO₂) and formic acid (HCOOH).

### Final Answer:
The compound formed along with carbon dioxide when oxalic acid is heated is **formic acid (HCOOH)**.

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