Lecture_6_091108

# Lecture_6_091108 - Lecture 6 Virial Expansions and Critical...

This preview shows pages 1–3. Sign up to view the full content.

Page 1 of 8 Lecture 6 – Virial Expansions and Critical Behavior September 11, 2008 Using the virial expansion in pressure: (1) at p = 0, Z = 1, perfect gas (2) at T →∞ , Z = 1 for all gasses (3) T 0 p p Z lim () ... p RT a b 2 RT a RT a b RT 1 p Z 3 T + + = = RT a b RT 1 p Z lim T 0 p

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

View Full Document
Page 2 of 8 If RT a b > then 0 p Z lim T 0 p > (Repulsive interactions dominate) (note the initial slope is positive) RT a b = then 0 p Z lim T 0 p = (Boyle's condition) (note the initial slope is zero) RT a b < then 0 p Z lim T 0 p < (Attractive interactions dominate) (note the initial slope is negative) b = a/RT can be rewritten as T B = a/Rb This is the Boyle Temperature!!! Perfect gas behavior over a
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 09/29/2008 for the course CHEM 3615 taught by Professor Aresker during the Fall '07 term at Virginia Tech.

### Page1 / 8

Lecture_6_091108 - Lecture 6 Virial Expansions and Critical...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online