9-B - Daltons Law of Partial Pressures Flash Animation -...

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1 Flash Animation - Click to Continue Flash Animation - Click to Continue Dalton’s Law of Partial Pressures
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2 In a mixture of gases the total pressure , P tot , is the sum of the partial pressures of the gases: Dalton’s law allows us to work with mixtures of gases. = n V RT P total Dalton’s Law of Partial Pressures
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3 Dalton’s Law of Partial Pressures For a two-component system, the moles of components A and B can be represented by the mole fractions ( X A and X B ). What is the mole fraction of each component in a mixture of 12.45 g of H 2 , 60.67 g of N 2 , and 2.38 g of NH 3 ? 1 B A B A B B B A A A = + + = + = X X n n n X n n n X
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Dalton’s Law of Partial Pressures Mole fraction is related to the total pressure by: On a humid day in summer, the mole fraction of gaseous H 2 O (water vapor) in the air at 25°C can be as high as 0.0287. Assuming a total pressure of 0.977 atm, what is the partial pressure (in atm) of H 2 O in the air?
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This note was uploaded on 02/29/2012 for the course CHM 111 taught by Professor Colyer during the Summer '08 term at Wake Forest.

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9-B - Daltons Law of Partial Pressures Flash Animation -...

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