Suppose that for a certain phase transition of a solid ΔtrsV=+1.0 cm3 mol−1 independent
of pressure. Then for an increase in pressure to 3.0 Mbar (3.0 × 1011 Pa) from 1.0 bar
(1.0 × 105 Pa), the Gibbs energy of the transition changes from ΔtrsG(1 bar) to