## Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules. Part

Question

Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.
Part A
What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal behavior.
Express your answer to three significant figures and include the appropriate units.
Part B
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Part C
What is the partial pressure of oxygen in air at atmospheric pressure (1 atm)? Assume ideal behavior.
Express your answer to two decimal places and include the appropriate units.

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1 day 2021-07-21T05:32:48+00:00 1 Answers 0 views 0

For A: The partial pressure of nitrogen in air is 0.780 atm

For C: The partial pressure of oxygen in air is 0.210 atm

Explanation:

Raoult’s law is the law that is used to calculate the partial pressure of the individual gases present in the mixture.

The equation for Raoult’s law is given as: …..(1)

where, = partial pressure of component A in the mixture = total partial pressure of the mixture = mole fraction of A

• For A:

We are given:

% composition of nitrogen in air = 78.0 % Putting values in equation 1, we get: Hence, the partial pressure of nitrogen in air is 0.780 atm

• For C:

We are given:

% composition of oxygen in air = 21.0 % Putting values in equation 1, we get: Hence, the partial pressure of oxygen in air is 0.210 atm