Extra-credit - -mol-1 and the air obeys ideal gas law If you are on the mountain should you expect rain or snow Derive the expression and solve it

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Answer all questions. 1. A gas is found to obey the equation of state given by P= RT - a --- --- V-b V Where a and b are constants but not equal to zero. Determine whether this gas a critical point. If it does, express the critical constants in terms of a and b. If does not explain why. 2. A cloud mass moving across the ocean at an altitude of 2000.0 m encounters a coastal mountain range. As it rises to a height of 3500.0 m to pass over the mountains, it undergoes adiabatic expansion. The pressure at 2000.0 and 3500.0 m is 0.802 and 0.602 atm respectively. If the initial temperature of the cloud mass is 288 K, what is the cloud temperature as it passes over the mountains. Assume that C p,m for air is 28.86 JK
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Unformatted text preview: -mol-1 and the air obeys ideal gas law. If you are on the mountain, should you expect rain or snow? Derive the expression and solve it. 3. If a gas obeys van der Waals equation (P + a/V 2 )(V-b) = RT prove that ∂ ∂ U V at constant temperature =a/V 2 . 4. What is the expected boiling point of water at 98.7 kPa. The heat of vaporization is 2258 Jg-1 , the molar volume of liquid water is 18.78 cm 3 mol-1 , and the molar volume of steam is 30.199 dm 3 mol-1 all values referring to 373.1K and 1atm. 5. Determine the degrees of freedom for the following systems a) A solution of KCl in water b) A solution of KCl and NaCl c) Ice in a solution of water and alcohol (Whisky on Rocks anybody!)...
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This note was uploaded on 11/28/2010 for the course CHEM 310 taught by Professor Ryan during the Spring '10 term at Michigan State University.

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Extra-credit - -mol-1 and the air obeys ideal gas law If you are on the mountain should you expect rain or snow Derive the expression and solve it

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