Why Do Carbonated Drinks Go Flat as They Warm

Solubility expressed as 1000 X C02 mole fraction in the liquid phase 

The solubility of nearly all gases in water decreases as the temperature is increased. Furthermore, the solubility of a gas increases with the partial pressure of the gas above the surface of a liquid solution, expressed as Henry s Law  

Both of these facts are employed in the carbonation process of sodas and beer and some sparkling wines. Low-temperature conditions and C02 pressures of 3 to 4 atm are used to enhance the dissolution of carbon dioxide gas in water. The graph in Fig. 3.1.1 presents the solubility of carbon dioxide in water at various temperatures and pressures. The parameter used to express C02 solubility is 

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