ECH152B_HW2

ECH152B_HW2 - i and b i are constants. Because the equation...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
ECH 152B Homework #2 Due: Friday, January 22, 2010 1) The compound p-azoxyanisole forms a liquid crystal. 5.0 g of the solid was placed in a tube, which was then evacuated and sealed. Use the phase rule to prove that the solid will melt at a single temperature and that the liquid crystal phase will make a transition to normal liquid phase at a single temperature. 2) If the molar density of a binary mixture is given by the empirical expression: ρ= a 0 + a 1 x 1 + a 2 x 1 2 find the corresponding expressions for g G ± and g ² ³ . 3) For a particular binary liquid solution at constant T and P, the molar enthalpies of mixtures are represented by the equation: H = x 1 (a 1 +b 1 x 1 ) + x 2 (a 2 + b 2 x 2 ) where the a
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: i and b i are constants. Because the equation has the form of Eq. (11.11), it might be that = a i + b i x i . Show whether this is true. 4) A vessel, divided into two parts by a partition, contains 4 mol of nitrogen gas at 75 o C and 30 bar on one side and 2.5 mol of argon gas at 130 o C and 20 bar on the other. If the partition is removed and the gases mix adiabatically and completely, what is the change in entropy? Assume nitrogen to be an ideal gas with C V = (5/2) R and argon to be an ideal gas with C V = (3/2) R. 5) Estimate the fugacity of isobutylene as a gas: a. At 280 o C and 20 bar b. At 280 o C and 100 bar...
View Full Document

This note was uploaded on 01/30/2010 for the course ECH 152B taught by Professor Kim during the Spring '10 term at UC Davis.

Ask a homework question - tutors are online