Explain why an opened bottle of carbonated water keeps its fizz longer if kept in a refrigerator than if kept at room temperature.
a. As time elapses the concentration of CO2 inside a closed refrigerator increases. The increased partial pressure of CO2 increases the solubility of CO2.
b. As time elapses the concentration of CO2 inside a closed refrigerator decreases. The decreased partial pressure of CO2 increases the solubility of CO2.
c. The solubility of gases decreases with decreasing temperature.
d. The solubility of gases increases with decreasing temperature.
Most gases are more soluble in cold than in hot (warm) water.
so d would be the correct answer
I would choose d.
The correct answer is d. The solubility of gases increases with decreasing temperature.
When carbonated water is exposed to air, some of the carbon dioxide (CO2) gas molecules escape, which leads to a decrease in the concentration of CO2 in the bottle. As a result, the fizziness or the release of carbon dioxide bubbles decreases over time.
However, when a bottle of carbonated water is kept in a refrigerator, the lower temperature inside the refrigerator helps to slow down the escape of CO2 gas molecules. This is because the solubility of gases, including carbon dioxide, increases as the temperature decreases. In other words, a lower temperature allows for more CO2 gas to dissolve into the water.
Therefore, by keeping the bottle of carbonated water in the refrigerator, you are effectively reducing the temperature, which increases the solubility of CO2 and helps to retain the fizziness for a longer period of time.