Atmospheric pressure at sea level is equal to a column of 760 mm hg. oxygen makes up 21 percent of the atmosphere by volume. the partial pressure of oxygen (po2) in such conditions is atmospheric pressure at sea level is equal to a column of 760 mm hg. oxygen makes up 21 percent of the atmosphere by volume. the partial pressure of oxygen (po2) in such conditions is 21/760 16 mm hg 760/21 120/75 160 mm hg submitr

The partial pressure of oxygen is 160 mmHg

Explanation:

We are given:

Percent of oxygen in air = 21 %

Mole fraction of oxygen in air =

To calculate the partial pressure of oxygen, we use the equation given by Raoult's law, which is:

where,

= partial pressure of oxygen = ?

= total pressure of air = 760 mmHg

= mole fraction of oxygen = 0.21

Putting values in above equation, we get:

Hence, the partial pressure of oxygen is 160 mmHg