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A mixture of carbon dioxide and nitrogen gases, at a total pressure of 889 mm Hg,...

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Chemistry

A mixture of carbon dioxide and nitrogen gases, at a totalpressure of 889 mm Hg, contains 7.17 grams of carbon dioxide and5.38 grams of nitrogen. What is the partial pressure of each gas inthe mixture?

PCO2 =___(?)___ mm Hg

PN2 = __(?)__ mmHg

Answer & Explanation Solved by verified expert
4.1 Ratings (674 Votes)

CO2 moles = 5.38 / 44 = 0.122

N2 moles = 7.17 / 28 = 0.256

total moles = 0.378

mole fraction of N2   = moles of N2 / total moles

                               = 0.256 / 0.378

                                = 0.677

mole fraction of Co2 = 0.323

total pressure = 889 mmHg

partial pressure of N2 = mole fraction of N2 x total pressure

                                    = 0.677 x 889

                                     = 593 mmHg

partial pressure of N2 = 593 mmHg

partial pressure of CO2 = 296 mmHg
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