If you are an environmental scientist, you need to know the theoretical limits on the amount of oxygen that water can dissolve in order to monitor the capacity of natural waters to sustain life. Verify that the concentration of oxygen in lake water is normally adequate to sustain aquatic life, which requires an O₂ concentration of at least 0.13 mmol · L^–1. The partial pressure of oxygen is 0.21 atm at sea level.

ANTICIPATE You know that aquatic life is viable under normal circumstances, so you should expect to find the necessary concentration.

PLAN Use Eq. 1 to calculate the molar concentration of oxygen.

Transcribed Image Text:

S = КнP (1)