Question

while oxygen it let into aquariums why are bubbles formed, when oxygen can dissolve in water?

Answer 1

Oxygen is soluble in water but only to a small extent.

There are two main reasons for low solubility of oxygen into water:-

1) Usually gases are less soluble in liquids.

2) Oxygen is a non polar molecule and on the other hand water is polar, therefore oxygen can dissolve into water only by dipole-induced dipole and Van Der Waals interactions.

Therefore oxygen is soluble only to a small extent in water. 

So, the oxygen that we let into aquariums (more suitable word would be fish tanks) remains mostly undissolved therefore forming bubbles.

Hope it helps ^_^

Answer 2

The reason that when oxygen it let into aquariums why are bubbles formed is because since the solubility is only to a small extent.

The two main reasons for low solubility of oxygen in water are :-
1>since the both molecules are opposite in nature i.e polar and non-polar so they are insoluble in each other .
2>We know that gases are basically insoluble in water due to there intermolecular forces .

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Best of luck ;)
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