Use the phase diagram for helium in Exercise 5B.3

(a) To describe the phases in equilibrium at each of helium’s two triple points;

(b) To decide which liquid phase is the more dense, helium-I or helium-II.

Exercise 5B.3

The phase diagram for helium is shown here.

Transcribed Image Text:

Pressure, P/atm 100, 10 1 Solid Liquid 0.1(helium-II) 0.01 Liquid (helium-I) 1 3 Gas L 1 2 4 Temperature, T/K 5 6