Question

Where do gases dissolve most easily?

Answer 1

The ability of a solid, liquid, or gaseous chemical substance called a solute to dissolve in a solid, liquid, or gaseous solvent is known as solubility. The physical and chemical characteristics of the solute and solvent, as well as temperature, pressure, and the presence of additional chemicals (including variations in pH) in the solution, all influence the solubility of a material.

Complete answer:
As the temperature rises, gases dissolved in water become less soluble.
As the temperature rises, gases dissolved in organic solvents become more soluble. Because dissolved oxygen in water is critical for fish life, rising temperatures (and hence less dissolved oxygen in water) might pose issues for them. The solubility of gases is affected by a number of factors, one of which is temperature. In general, the solubility of a gas in water decreases as the temperature rises: colder water can hold more gas dissolved in it.
The solubility of gases in solvents is measured using Henry's law. The partial pressure of a gas above the solvent is directly proportional to its solubility in the solvent. This connection resembles Raoult's law and may be expressed as: $p={{k}_{\text{H}}}c$
where ${{k}_{H}}$ is a temperature-dependent constant, $p$ is partial pressure (atm), and c is dissolved gas concentration in liquid (mol/L).
Take, for example, soda water. Drinking an ice cold coke is a regular occurrence. When the liquid (mostly water) is cold and under pressure, the carbon dioxide solution is most concentrated. When you open the container, carbon dioxide bubbles quickly rise to the surface, releasing the pressure. This demonstrates that when gases are under pressure, they dissolve the most easily.
As a result, gases dissolve quickly in high-pressure, low-temperature solutions.

Note:
In some instances, the tendency of decreasing gas solubility as temperature rises does not hold true. While this is true for gases dissolved in water, gases dissolved in organic solvents become more soluble as the temperature rises. There are numerous molecular causes for the change in solubility of gases as temperature rises, which is why there is no one trend independent of gas and solvent that predicts whether gases will become more or less soluble as temperature rises.