Why does warm soda go flat faster than chilled soda?

1. Temperature: Higher temperatures increase the kinetic energy of gas molecules, causing them to move faster and escape the liquid more rapidly. The higher the temperature, the faster the gas escapes, leading to faster loss of carbonation and a flat taste.

2. Pressure: Increased pressure reduces the rate of gas escape from the liquid. Carbon dioxide is more soluble in liquids under higher pressure, so increasing pressure keeps more gas dissolved in the soda for longer. Chilled soda is typically kept under higher pressure compared to warm soda, reducing the loss of carbon dioxide and keeping the fizz intact for a longer duration.

When warm soda is exposed to atmospheric pressure, the higher kinetic energy of gas molecules overcomes the liquid's ability to retain them, causing rapid release of carbon dioxide and faster flattening.