The state diagram for substance X is characterized by a triple
point (195 K, 0.0600 atm) and a critical point (406 K, 111 atm).
These two points represent the two extreme conditions where the
equilibrium X(l) ⇌ X(g) takes place; the pressure at each point
represents the thermodynamic constant characterizing the process of
evaporation of liquid X.
a) Estimate the values of ∆H°vap and ∆S°vap for the process X(l)
→ X(g).
b) From the values obtained part (a), estimate the...