HW1_Answer - Chem340 HW1 Key (1/22/2011) P1.2) Consider a...

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1 Chem340 HW1 Key (1/22/2011) P1.2) Consider a gas mixture in a 2.00-dm 3 flask at 27.0°C. For each of the following mixtures, calculate the partial pressure of each gas, the total pressure, and the composition of the mixture in mole percent: a. 1.00 g H 2 and 1.00 g O 2 b. 1.00 g N 2 and 1.00 g O 2 c. 1.00 g CH 4 and 1.00 g NH 3 To calculate the partial pressures we use the ideal gas law: a)      Pa 10 6.18 mol kg 10 2.02 m 10 2.00 kg 300.15 mol K J 8.314472 kg 0.001 V M T R m V T R n p 5 1 3 - 3 3 - 1 1 2 2 2 2 H H H H     Pa 10 3.90 mol kg 10 32.0 m 10 2.00 kg 300.15 mol K J 8.314472 kg 0.001 V M T R m V T R n p 5 1 3 - 3 3 - 1 1 2 2 2 2 O O O O Pa 10 57 . 6 p p p 5 total 2 2 O H % 4.1 9 mol kg 10 32.0 kg 0.001 mol kg 10 2.02 kg 0.001 mol kg 10 2.02 kg 0.001 100 O mol H mol H mol 100 H % mol 1 3 - 1 3 - 1 3 - 2 2 2 2 % .9 5 mol kg 10 32.0 kg 0.001 mol kg 10 2.02 kg 0.001 mol kg 10 32.0 kg 0.001 100 O mol H mol O mol 100 O % mol 1 3 - 1 3 - 1 3 - 2 2 2 2 b)
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2      Pa 10 4.45 mol kg 10 28.02 m 10 2.00 kg 300.15 mol K J 8.314472 kg 0.001 V M T R m V T R n p 4 1 3 - 3 3 - 1 1 2 2 2 2 N N N N     Pa 10 3.90 mol kg 10 32.0 m 10 2.00 kg 300.15 mol K J 8.314472 kg 0.001 V M T R m V T R n p 5 1 3 - 3 3 - 1 1 2 2 2 2 O O O O Pa 10 35 . 8 p p p 4 total 2 2 O H % 3.3 5 mol kg 10 32.0 kg 0.001 mol kg 10 28.02 kg 0.001 mol kg 10 28.02 kg 0.001 100 O mol N mol N mol 100 N % mol 1 3 - 1 3 - 1 3 - 2 2 2 2 % 6.7 4 mol kg 10 32.0 kg 0.001 mol kg 10 28.02 kg 0.001 mol kg 10 32.0 kg 0.001 100 O mol N mol O mol 100 O % mol 1 3 - 1 3 - 1 3 - 2 2 2 2 c)     Pa 10 7.32 mol kg 10 17.03 m 10 2.00 kg 300.15 mol K J 8.314472 kg 0.001 V M T R m V T R n p 4 1 3 - 3 3 - 1 1 3 3 3 3 NH NH NH NH     Pa 10 7.77 mol kg 10 16.04 m 10 2.00 kg 300.15 mol K J 8.314472 kg 0.001 V M T R m V T R n p 4 1 3 - 3 3 - 1 1 4 4 4 4 CH CH CH CH Pa 10 51 . 1 p p p 5 total 2 2 O H
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Chapter 1/Fundemental Concepts of Thermodynamics 3  % 8.5 4 mol kg 10 17.03 kg 0.001 mol kg 10 16.04 kg 0.001 mol kg 10 17.03 kg 0.001 100 CH mol NH mol NH mol 100 NH % mol 1 3 - 1 3 - 1 3 - 4 3 3 3
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This note was uploaded on 03/06/2011 for the course CHEM 340 taught by Professor Staff during the Spring '08 term at Ill. Chicago.

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HW1_Answer - Chem340 HW1 Key (1/22/2011) P1.2) Consider a...

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