Abstract
Speeds of sound and viscosities of aqueous and methanolic calcium chloride solutions were measured as functions of concentration [0.0040 ≤ m/(mol·kg-1) ≤ 7.151 and 0.1903 ≤ m/(mol·kg-1) ≤ 3.252 for aqueous and methanolic calcium chloride solutions, respectively] and temperature (273.15 ≤ T/K ≤ 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.
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