How do you find the partial pressure of oxygen?

Answer 1

In what circumstance?

In a gaseous mixture, the partial pressure of a gaseous component is the same as the pressure it would exert if that gas alone occupied the container.

We are currently breathing air at #1# #atm# pressure. Given the normal composition of air, 78% dinitrogen, 21% dioxygen, 1% other gases, we can say quite categorically that the partial pressure of dioxygen in the atmosphere is approx. #0.2*atm#, and the partial pressure of dinitrogen is approx. #0.8*atm#. The total pressure is of course the sum of the individual partial pressures.

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Answer 2

Cameron Andrews

To find the partial pressure of oxygen in a gas mixture, you multiply the total pressure of the mixture by the mole fraction of oxygen in the mixture. The mole fraction of oxygen is the ratio of the moles of oxygen to the total moles of all gases in the mixture.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.