Fugacity: It is derived from Latin, expressed as fleetness or escaping ...
Fugacity: It is derived from Latin, expressed as fleetness or escaping ...
Fugacity: It is derived from Latin, expressed as fleetness or escaping ...
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<strong>Fugacity</strong> <strong>is</strong> plotted against various reduced pressure at various reduced temperature<br />
Using Residual Volume(): The residual volume <strong>is</strong> the difference between actual<br />
volume (V) and the volume occupied by one mole of g<strong>as</strong> under same temperature and<br />
RT RT<br />
pressure<br />
V , V <br />
P<br />
P<br />
RT <br />
dG <br />
dP<br />
RTd ln f<br />
P <br />
dP <br />
RT dP RTd ln f<br />
RT P <br />
<br />
dP d ln<br />
RT <br />
f<br />
P<br />
<br />
<br />
<br />
f <br />
ln dP<br />
P RT<br />
Problem<br />
F<strong>or</strong> <strong>is</strong>opropanol vap<strong>or</strong> at 200 o C the following equation <strong>is</strong> available<br />
Z=1- 9.86 x 10 -3 P-11.45 x 10 -5 P 2<br />
Where P <strong>is</strong> in bars. Estimate the fugacity at 50 bars and 200 o C<br />
PV<br />
3<br />
5<br />
2<br />
Z 1 9.<br />
86 10<br />
P 11.<br />
4110<br />
P<br />
RT<br />
V<br />
<br />
ln f<br />
ln f<br />
ZRT<br />
p<br />
<br />
<br />
1<br />
RT<br />
1<br />
RT<br />
<br />
<br />
P<br />
<br />
1<br />
P<br />
<br />
1<br />
RT<br />
( 1<br />
P<br />
VdP<br />
<br />
9.<br />
86 10<br />
3<br />
RT<br />
( 1<br />
9.<br />
86 10<br />
P<br />
3<br />
3<br />
9.<br />
86 10<br />
dP <br />
P 11.<br />
4110<br />
5<br />
P 11.<br />
4110<br />
50 50<br />
50<br />
dp<br />
5<br />
ln f<br />
<br />
11.<br />
4110<br />
PdP<br />
1<br />
p<br />
1<br />
1<br />
5<br />
P<br />
2<br />
)<br />
2<br />
P ) dP
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