Chapter 6, Problem 6.100P

(a)

Interpretation Introduction

Interpretation:

Comment on why carbon dioxide has no normal boiling point. Estimate the value of $\omega$ for carbon dioxide with the help of the $P_r{}^{sat}$ in conjunction with the triple point coordinates calculated by Lee/Kesler correlation. Compare the results with table B.1 of Appendix B.

Concept Introduction:

According to Lee/Kesler correlation, Acentric factor uses with the calculations of $P_r{}^{sat}$ at normal boiling point is:

  $\omega =\frac{\ln P_{tr}-\ln P_r{}^0\left(T_{tr}\right)}{\ln P_r{}^1\left(T_{tr}\right)}$

(b)

Interpretation Introduction

Interpretation:

The hypothetical normal boiling point for carbon dioxide by Lee/Kesler correlation should be estimated. Comment on the likely reasonableness of this result.

Concept Introduction:

According to Lee/Kesler correlation,

For calculation of $P_r{}^{sat}$ the following equation is used:

  $\ln P_r{}^{sat}\left(T_r\right)=\ln P_r{}^0\left(T_r\right)+\omega \ln P_r{}^1\left(T_r\right)$