Question

Why are soda water bottles sealed under high pressure?

Answer 1

1. Soda water bottles are sealed under high pressure to preserve CO₂ and keep the drink’s fizz and freshness.
2. Henry’s Law states that the solubility of a gas in a liquid increases with pressure, resulting in more CO₂ remaining dissolved in the water.
3. If the bottle is not sealed under high pressure, dissolved CO₂ can escape, causing the soda to go flat.
4. The high pressure avoids premature carbonation loss, preserving the soda’s taste and pleasant qualities until opened.