Answer:
high pressure and low temperature
Step-by-step explanation:
Generally, solubility varies with temperature. In most substances, an increase in temperature causes an increase in solubility. That's why sugar dissolves better in hot coffee, and the chocolate bar must be dipped in hot milk to make a submarine.
The solubility of gases dissolved in liquids is different from that of solids. The solubility of a gas in water increases with the pressure of the gas on the solvent, if the pressure decreases, the solubility also decreases
The solubility of gases in liquids has a different behavior from that of solids. Both pressure and temperature have a strong influence on its solubility.
What is happening with the molecules? As the temperature rises, the energy of movement (kinetics) of the solute and solvent particles increases, thereby weakening the intermolecular forces. In this way, interactions between its particles and those of solvent are established, favoring the mixing.
In the case of gases, the decrease in intermolecular forces "releases" the gas molecules from the forces that keep them in solution and will escape from the container, so it will be observed that as the temperature increases, the solubility of a gas decreases in a solvent like water.
Gases dissolved in drinking water (mainly oxygen and nitrogen, the main components of the air) are responsible for the small bubbles that appear when the liquid heats up and has not yet reached the boiling point. That is, as it warms up, the molecules acquire enough kinetic energy to leave the liquid. When the water boils, it is completely degassed and a time is required for these gases to return to the liquid.