The density (rho) and sound speed (u) has been measured for ascorbic acid ((5R)-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxyfuran-2(5H)-one) + H2O + magnesium chloride (MgCl2) (or calcium chloride (CaCl2), or barium chloride (BaCl2)) at temperatures T = (303.15, 308.15, 313.15, and 318.15) K and atmospheric pressure p = 0.1 MPa. These parameters were then used to obtain thermodynamic and acoustic functions such as apparent molar volume (phi(v)), limiting apparent molar volume (phi(degrees)(v)), limiting apparent molar volume expansibility (phi(E)degrees), adiabatic compressibility (kappa(s)), intermolecular free length (L-f) and relaxation time (tau). The ion-solvent and ion-ion interactions in ascorbic acid + H2O system have been discussed using these parameters. The effect of MgCl2, CaCl2, and BaCl2 on these interactions as well as on the solvent structure has also been discussed.