Question

How does the solubility of various gases in water is helpful for aqatic life

Answer 1

Distilled water has only trace amounts of materials that may come from the still itself. Both tap water and distilled water will have some dissolved gases. Any gas in the air, which is in contact with the water, can be dissolved in the water, although, most gases in the air aren't all that soluble in water. The two most important gases which are found in water are carbon dioxide and oxygen. Of the gases in air, CO2 is the most soluble in water, which is why both natural water and distilled water are slightly acidic.
CO2 + H2O <==> H+ + HCO3-
Oxygen is slightly soluble in water, enough so that fish and other aquatic life can extract enough to stay alive.

Answer 2

Hello there,

Good question!!

Before we go to the answer a few points are to be considered.

1.As you know most aquatic organisms use gills or skin to breath under water.

2.they absorb gases which are dissolved in the water to sustain their life.

3.many important gases such as nitrogen, carbon dioxide, oxygen are present in the water in dissolved forn.

Coming to the answer...

Both aquatic plants and animals use gases dissolved in the water .
So how do these gases gets dissolved in the water?
The water exchanges gas with the atmosphere with the help of wind and waves or current,thereby keeping a balance between the water and the atmosphere.

Let's divide this answer into two shall we ?

first we shall look on how aquatic plants use the dissolved gases

They use dissolved gases such as carbon dioxide and oxygen to carry out basic life sustaining activities.
They use carbon dioxide and sunlight to perform photosynthesis,and make carbohydrates.

so who releases the energy?
Oxygen absorbed by the plants help them release the energy from carbohydrates.

Let's now look into aquatic animals..

They use gills or skins to absorb dissolved oxygen from the water for respiration.the b products which is carbon dioxide also helps in maintaining the CO2 level in the water.

Some organisms that have calacarious outershells depend upon
Bicarbonates to form calcium carbonate shells which acts as a source of protection for them.

The points mentioned above is sufficient for us to understand that dissolved gases are very much important in sustaining aquatic life.

I hope this helps you nd doubts are indeed welcome....