Callen H.B - Thermodynamics And An Introduction To Thermostatistics · Problem 3.4-3

SOME FORMAL RELATIONSHIPS, AND SAMPLE SYSTEMS

Physics — Statistical Mechanics · ideal-gas-adiabatic-expansion

Problem

Two moles of a monatomic ideal gas are at a temperature of

0^\circ

C and a volume of 45 liters. The gas is expanded adiabatically (

dQ = 0

) and quasi-statically until its temperature falls to

-50^\circ

C. What are its initial and final pressures and its final volume? Answer:

P_i = 0.1

MPa,

V_f = 61 \times 10^{-3}

^3