Nitrogen gas does not react with water. It does dissolve in water. Nitrogen (N2) solubility at 20oC and pressure = 1 bar is approximately 20 mg/L. ... Nitrates and ammonia dissolve in water readily.
Why is nitrogen insoluble in water?
It is because both these gases are non-polar , water is a polar solvent and so non-polar species will be insoluble in it!
Does nitrogen sink or float in water?
Because the liquid nitrogen is less dense than the water, it just floats on top instead of mixing in. And while it does, it sometimes forms a tiny bit of ice beneath it, which acts as an insulator and keeps the warm liquid somewhat separate from the cold nitrogen.