What is the quantity of oxygen that can remain dissolved in water related to?

The quantity of oxygen that can remain dissolved in water is significantly influenced by temperature. As the temperature of water increases, its capacity to hold dissolved gases, including oxygen, decreases. This is because warmer water has more kinetic energy, which allows gas molecules to escape more easily into the atmosphere rather than remaining dissolved. Conversely, cooler water can hold more dissolved oxygen because the lower temperatures help keep those gas molecules trapped in the liquid.

While factors such as salinity, water pressure, and pH can also impact the solubility of oxygen, temperature is the most direct determinant of how much oxygen water can retain when considering typical aquatic environments. In practical applications, such as studying aquatic ecosystems or managing water quality, understanding the relationship between temperature and dissolved oxygen levels is crucial for ensuring the health of aquatic organisms.