Soda water contains

Options

A. nitrous acid
B. acetic acid
C. carbon dioxide
D. sulphuric acid

Explanation

**Step-by-Step Solution:**

1. **Understanding Soda Water**: Soda water, also known as carbonated water, is water that has been carbonated by dissolving carbon dioxide gas under pressure.

2. **Components of Soda Water**:
- **Carbon Dioxide (CO₂)**: This is the primary component that gives soda water its fizz. When CO₂ is dissolved in water, it forms carbonic acid (H₂CO₃), which is responsible for the slightly acidic taste of soda water.
- **Water (H₂O)**: The main component of soda water is, of course, water itself.
- **Minerals**: Some soda waters may contain added minerals, such as sodium, which can enhance flavor.

3. **Pressure**: The carbon dioxide is kept under pressure in the bottle or can, which allows it to remain dissolved in the water. When the container is opened, the pressure is released, and the carbon dioxide escapes, creating bubbles.

4. **Conclusion**: Therefore, soda water primarily contains carbonated water, which is water infused with carbon dioxide gas, and may also contain some minerals.

**Final Answer**: Soda water contains carbonated water (water and carbon dioxide).

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