Problem: A mixture of three gases has a pressure of 1380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar? a. 238 mm Hg b. 302 mm Hg c. 356 mm Hg d. 1753 mm Hg e. 8018 mm Hg

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FREE Expert Solution
FREE Expert Solution

We’re being asked to calculate the partial pressure of Ar in a mixture of CO2, CO, and Ar


Recall that the partial pressure of a gas (PGas) in a mixture is given by:



where χGas = mole fraction of the gas and Ptotal = total pressure of the gas mixture


The mole fraction of the gas is then given by:



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Problem Details

A mixture of three gases has a pressure of 1380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar? 

a. 238 mm Hg 

b. 302 mm Hg 

c. 356 mm Hg 

d. 1753 mm Hg 

e. 8018 mm Hg


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Based on our data, we think this problem is relevant for Professor Dixon's class at UCF.