* At standard atmospheric pressure (1 atm) and 20°C (68°F): Nitrogen's solubility in water is approximately 0.018 g/L. This means that only about 18 milligrams of nitrogen can dissolve in 1 liter of water.
* Temperature dependence: Like most gases, nitrogen's solubility in water decreases as temperature increases.
* Pressure dependence: Nitrogen's solubility increases with increasing pressure. This is why nitrogen is more soluble in deep oceans, where the pressure is higher.
Why is nitrogen's solubility so low?
Nitrogen is a nonpolar molecule, while water is a polar molecule. This means that there is very little attraction between nitrogen and water molecules, making it difficult for nitrogen to dissolve.
Significance of nitrogen's low solubility:
* Aquatic life: Nitrogen is an essential nutrient for aquatic plants and animals, but its low solubility limits its availability. This is one reason why nitrogen fixation (the conversion of atmospheric nitrogen into a usable form) is crucial for aquatic ecosystems.
* Diving: At higher pressures, nitrogen becomes more soluble in the blood. When divers ascend too quickly, the dissolved nitrogen can form bubbles in the blood, leading to a condition called decompression sickness.
Note: The solubility of nitrogen in water can vary depending on factors like the presence of other gases, salts, and organic matter.
