Everyday chemistry: Soda water contains which dissolved gas under pressure? Focus on the fizzy constituent responsible for effervescence and tangy taste. Choose the correct gas.

What is being asked?The gas dissolved in soda water that produces bubbles and mild acidity.

Given data

• Product: Soda water / carbonated water

Concept/ApproachSoda water is water into which CO₂ is dissolved under pressure, forming carbonic acid (H₂CO₃) responsible for its tang.

Final AnswerCarbon dioxide