Temperature of a liquid and solubility of a gas

In summary, the conversation is discussing the relationship between temperature and solubility of a gas. The solubility of a gas decreases as the temperature of water increases from 0 C to around 30 C. The question arises if there is a more accurate formula for this relationship. Additionally, the conversation touches on the factors that can affect solubility, such as the diffusion rate and molar mass of a gas. However, there is no specific formula for this and data must be measured and fitted.
  • #1
nautica
I am looking for a formula that would relate temperature and solubility of a gas.

I know that solubility has an inverse relationship and I also know that as the temperature of water increases from 0 C to around 30 C, the solubility of a gas in the water decreases to about half.

Surely there is a formula that is more accurate than this.

Thanks
nautica
 
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  • #2
Also, what would make one gas be more soluble than another.

For examplle the diffusion rate of CO2 is .86 that of O2, given that rate is inversly porportional to the square root of the molar mass. But, CO2 appears to be diffusion faster b/c it is more soluble.

thanks
Nautica
 
  • #3
^^^^^^^^^^^^^^^^^^^^^^
 
  • #4
Two phase mixture equilibria? No "formula." Measure and fit the data. Solubilities can increase or decrease with temperature (He is an example). Is there something more specific you're seeking?
 

What is the relationship between the temperature of a liquid and the solubility of a gas?

The solubility of a gas in a liquid is directly proportional to the temperature of the liquid. As the temperature of the liquid increases, the solubility of the gas also increases. This is because at higher temperatures, the molecules in the liquid have more energy and are able to overcome the attractive forces between them and the gas molecules, allowing the gas to dissolve more easily.

How does pressure affect the solubility of a gas in a liquid?

Increasing the pressure on a gas above a liquid will increase its solubility in the liquid. This is known as Henry's law. As the pressure increases, more gas molecules are forced into the liquid, leading to a higher solubility. This effect is most noticeable for gases that are highly soluble in liquids, such as carbon dioxide in water.

Why do some gases have a higher solubility in liquids than others?

The solubility of a gas in a liquid depends on several factors such as temperature, pressure, and the nature of the gas and liquid molecules. The polarity of the gas and liquid molecules plays a significant role in determining the solubility. Polar gases, such as carbon dioxide, are more soluble in polar liquids like water, while non-polar gases, such as oxygen, are more soluble in non-polar liquids like oil.

How does the type of liquid affect the solubility of a gas?

The type of liquid can have a significant impact on the solubility of a gas. For example, the solubility of gases in water is generally higher than in other liquids due to the high polarity and ability of water to form hydrogen bonds. Additionally, the viscosity and surface tension of the liquid can also affect the solubility of a gas by altering the interactions between the gas and liquid molecules.

What other factors can affect the solubility of a gas in a liquid?

In addition to temperature, pressure, and the nature of the gas and liquid molecules, other factors that can affect the solubility of a gas in a liquid include the presence of other solutes, the pH of the solution, and the presence of catalysts or inhibitors. These factors can alter the interactions between the gas and liquid molecules, leading to changes in solubility.

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