Expression for Fugacity of a Pure Liquid
| |||||||||||||||||||||||
The representation of liquid state by EOS is generally difficult. Thus, the calculation of fugacity of a compressed (or sub-cooled) liquid is based on the saturated liquid state as a reference state. One starts with the two generic relations (that apply to any pure real fluid ‘i’) already introduced in the section 6.7, namely:
![]() ![]() The two equations above may be combined to yield: | |||||||||||||||||||||||
![]() | (6.115) | ||||||||||||||||||||||
As shown (eqn. 6.96) at the saturation condition for co-existing vapour and liquid phases:
![]() | |||||||||||||||||||||||
Thus for a compressed liquid state at a given pressure one can write for an isothermal change of pressure from
![]() | |||||||||||||||||||||||
![]() | (6.116) | ||||||||||||||||||||||
Alternately, ![]()
| (6.117) |
- Features
- _GATE 2020
- _GATE CUTOFF
- _JOB
- _GATE GUIDLINES
- NOTES
- _NOTES
- _NPTEL NOTES
- _UNACADEMY
- Quiz
- _QUIZ
- _PSU's MOCK TEST
- _QUESTION BANK
- PreGATE
- TEST SERIES
- _MINI TEST
- _SECTION TEST
- _FULL LENGTH TEST
- _RANKER TEST
- CH GATE Paper
- Interview Preparation
- _INTERVIEW GUIDLINES
- _THINK CHEMICAL
- _ONGC
- _BARC
- _IOCL
- Book