Investigation of the thermal properties and apparent molar volumes of ZnBr2 (aq) in the temperature range from 298.15 to 398.15 K and at pressures up to p = 60 MPa using a piezometer of constant volume

The (p, ρ, T) and (ps, ρs, Ts) properties and apparent molar volumes Vϕ of ZnBr2(aq) at T = (298.15 to 398.15) K, pressures up to p = 60 MPa were reported, and apparent molar volumes of ZnBr2 at infinite dilution Vϕ0 have been evaluated. The experiments were carried out by the constant volume piezometer installation, (p, ρ, T) and (ps, ρs, Ts) values were described by an equation of state. The isothermal compressibilities k and thermal expansivities α were calculated from the equation of state. An empirical correlation for density of zinc bromide (aq) with pressure, temperature and molality has been derived. The experiments were carried out at molalities m = (0.06220, 0.17341, 0.38183, 0.84419, 1.43444, and 4.18418) mol kg− 1 of zinc bromide.