Thermodynamics, Statistical Physics, and Quantum Mechanics

30 PROBLEMS

4.58 Phase Transition (MIT)

The curve separating the liquid and gas phases ends in the critical point

where Using arguments based on thermodynamic

stability, determine

at the critical point.

Hydrogen Sublimation in Intergalactic Space

(Princeton)

4.59

A lump of condensed molecular hydrogen in intergalactic space would tend

to sublimate (evaporate) because the ambient pressure of hydrogen is well

below the equilibrium vapor pressure. Find an order-of-magnitude estimate

of the rate of sublimation per unit area at The latent heat of

sublimation is and the vapor pressure at the triple point

is of Hg.

4.60 Gas Mixture Condensation (Moscow Phys-Tech)

A mixture of of nitrogen and some oxygen is isothermally
compressed at The result of this experiment is plotted as the
pressure dependence of the mixture versus volume in arbitrary units (see
Figure P.4.60). Find the mass of oxygen and the oxygen saturation vapor
pressure at this temperature.