Isentropic compressibility and viscosity of aqueous and methanolic calcium chloride solutions

Speeds of sound and viscosities of aqueous and methanolic calcium chloride solutions were measured as functions of concentration [0.0040 less than or equal to m/(mol.kg(-1)) less than or equal to 7.151 and 0.1903 less than or equal to m/(mol.kg(-1)) less than or equal to 3.252 for aqueous and methanolic calcium chloride solutions, respectively] and temperature (273.15 less than or equal to T/K less than or equal to 323.15). Isentropic compressibility isotherms of aqueous calcium chloride solutions converge at 5.1 mol.kg(-1). In the case of methanolic calcium chloride solutions, isentropic compressibility isotherms vary smoothly with the increase in concentration and converge at 5.66 mol.kg(-1) on extrapolation. Total solvation numbers of calcium chloride in water and methanol media were estimated to be 10.9 and 5.5, respectively.