Chemical Engineering Thermodynamics
At the critical point of a substance
the surface tension vanishes.
liquid and vapour have the same density.
there is no distinction between liquid and vapour phases.
all (a), (b) and (c).
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Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Phosphoric acid is produced in wet process from phosphate rock and
The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be