Question

The solubility of oxygen in aqueous solutions is
about?
O A. 20 ppm
O B.15 ppm
O C. 10 ppm
O D.5 ppm​

Answer 1

Answer:

c.10 ppm

Explanation:

solubility of oxygen in aqueous solution is 10 ppm

Answer 2

Answer:

The correct option is C. 10 ppm.

Explanation:

• Only around 10 ppm of oxygen is soluble in aqueous solutions at room temperature and pressure. In aerobic cultures, this amount of oxygen is quickly depleted and must be continuously replenished by sparging.
• At 25°C and 1 bar of pressure, oxygen is soluble in water at a rate of 40 mg/L. The oxygen partial pressure in air with a typical composition is 0.2 atm. This causes 40.0.2 = 8 mg O2/L of water to dissolve when it comes into touch with air.

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