Which one of the following gas is used in making soft drinks?

The correct answer is CO₂.

Key Points

• Carbon dioxide (CO₂) is the primary gas used in the production of soft drinks to create carbonation.
• Carbonation occurs when CO₂ is dissolved in water under high pressure, forming carbonic acid, which gives the soft drink its fizzy texture and tangy taste.
• The release of CO₂ from a soft drink upon opening the bottle or can creates the characteristic bubbles and effervescence.
• CO₂ is non-toxic, colorless, and odorless, making it safe for use in beverages.
• It also acts as a mild preservative by inhibiting the growth of spoilage-causing microorganisms in soft drinks.

Additional Information

• Carbonation Process
  • Carbonation is the process of dissolving CO₂ into water under high pressure.
  • When the pressure is released (e.g., opening a bottle), CO₂ escapes, creating bubbles.
• History of Carbonated Beverages
  • The concept of carbonated water was first introduced by Joseph Priestley in 1767.
  • Soft drinks gained popularity in the 19th century as flavored carbonated beverages became commercially available.
• Other Gases and Their Uses
  • NH₃ (Ammonia): Used in refrigeration systems and fertilizers, not in beverages.
  • PH₃ (Phosphine): A toxic gas used in pest control, not related to food or drinks.
  • COCl₂ (Phosgene): A highly toxic gas used in chemical manufacturing, not safe for consumption.
• Health Considerations
  • Excessive consumption of carbonated drinks can lead to health issues like dental erosion and obesity.
  • Moderation is key to enjoying soft drinks without adverse health effects.