Question

What is the use of solubility of oxygen and carbon dioxide in the water?

Answer 1

Hint: We know that the solubility of a gas in a liquid is directly proportional to the pressure of that gas and solubility of a gas in liquid is inversely proportional to temperature and the relationship between solubility of a gas in liquid with temperature along with pressure change.

Complete answer:
As we know that the solubility of gas changes with temperature. As we already mentioned, gas solubility in liquids is inversely proportional to temperature, which means solubility of the gas decreases with an increase in temperature. This happens because when we increase the temperature of a solution the particles dissolve in it either the molecules of water or any gas dissolved in it get energy from this heat and we know very well that particles are continuously moving. Dissolved carbon dioxide is not very much soluble in water.
Whenever we open a bottle cap of soda or soft drink bottles then we see bubbles rising out in the bottle. These bubbles are of carbon dioxide which is made to dissolve in water. With water carbon dioxide forms carbonic acid. High pressure is applied to dissolve the carbon dioxide gas in water because carbon dioxide is not very much soluble in water and whenever pressure is released by opening the bottle cap carbon dioxide gas releases instantaneously creating the effervescence. Oxygen dissolved in water is very useful for aquatic life. It is important to note that Carbon dioxide is one of the most important gases that dissolve in the ocean.
Some of it stays as dissolved gas, but most reacts with the water to form carbonic acid or reacts with carbonates already in the water to form bicarbonates. This removes dissolved carbon dioxide from the water. Oxygen dissolved in water is used by aquatic animals for respiration and survival. Carbon dioxide dissolved in water is used by aquatic plants to prepare their food by photosynthesis.

Note:
Remember that the increase in concentration of carbon dioxide in the atmosphere increases the uptake of carbon dioxide into the oceans which causes a measurable decrease in the pH of the oceans, which is referred to as ocean acidification.