Question

Air contains 78.08% nitrogen, 20.095% oxygen, and 0.93% argon. calculate the partial pressure of oxygen if the total pressure of the air sample is 1.7 atm.

a.

Answer 1

20.095

Step-by-step explanation:

Answer 2

partial pressure in a mixture of two or more gases will be given by formula

`P_(partial)` = mole fraction of gas * total pressure

now here mole fraction is same as percentage of gas in the mixture

Now mole fraction of oxygen is 0.20095 (20.095%)

now here pressure of oxygen in the mixture is given as

`P_(o_2) = 0.20095 * P_(total)`

`P_(o_2) = 0.20095 * 1.7`

`P_(o_2) = 0.342 atm`

so pressure due to oxygen in the mixture will be 0.342 atm