To increase the solubility of CO₂ in soft drinks and soda water, the bottle is sealed under which among the following condition?

Question

Question

This question was previously asked in

JKSSB SI Official Paper (Held On: 11 Dec 2022 Shift 2)

Answer 1

The correct answer is High pressure.

Key Points

To increase the solubility of CO2 in soft drinks and soda water, bottles are sealed under high pressure.
Under high pressure, the carbon dioxide gas dissolves more readily in the liquid, leading to the formation of carbonic acid.
This process is essential for maintaining the fizz in carbonated beverages.
When the bottle is opened, the pressure is released and the dissolved CO2 escapes in the form of bubbles.
The process of dissolving a gas in a liquid under high pressure is explained by Henry’s Law, which states that the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid.

Additional Information

Low pressure
- Low pressure would decrease the solubility of carbon dioxide in the liquid, resulting in a flat beverage.
Zero pressure
- Zero pressure would mean no additional force to keep the carbon dioxide dissolved in the liquid, causing the drink to lose its fizz quickly.