extra-credit

# 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

This preview shows pages 1–2. Sign up to view the full content.

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

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

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!)...
View Full Document

## 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.

### Page1 / 2

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

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online