Four vapor pressure data points—two representing solid–vapor equilibrium and two representing liquid–vapor equilibrium—are available for a compound:

A. Give your best estimate of the triple point pressure and temperature for this compound.

B. Give your best estimate of pressure at which solid–liquid equilibrium occurs at T = 50°C.

C. Give your best estimate of the temperature at which liquid–vapor equilibrium occurs at P = 0.15 bar.

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Temperature (°C) 0 25 50 75 Pressure (bar) 0.08 0.10 0.115 0.127 Phases Solid-vapor Solid-vapor Liquid-vapor Liquid-vapor The molar volume of the compound is VS 80 cm³/mol at 25°C and 1 atm, and VL = 90 cm³/mol at 50°C and 1 atm.