Oxygen is not a solution, it is an element.
It is still oxygen, merely dissolved into a solution of oxygen and whatever else is in the solution.
Firstly oxygen isn't dissolved into water, but the solution is hydrogen dioxide.
Pyrogallol,when in alkaline solution, it absorbs oxygen from the air, turning brown from a colourless solution. or simply none
oxygen
As an absorbant for oxygen
It is a solution of several gasses, the most abundant of which are nitrogen and oxygen.
only about 1.5% of the oxygen transported is carried in the dissolved form
An acid or base is never a single element, it is a solution, and a solution that contains H+ OR OH- in it, so oxygen is neither an acid nor base.
Water is one of the only clear solution made of hydrogen and oxygen
Oxygen is a solvent and if you want to know what a helium is then it is a solute.
oxygen
Usually hydrogen will evolve from the cathode and oxygen from the anode, but if zinc is the anode, it may dissolve to produce zinc ions in the solution either instead of or along with oxygen evolving.