The ultrasonic velocity and density of PVA (Mw-125,000 ) solutions in solvents distilled water, 1N NaOH, 1NKOH, and 4M Urea have been measured in varying ranges of concentration from 0.004 to 0.080 molm-3 at 298.15K, 303.15K, 308.15K, 313.15K and at frequency 1MHz. Apparent and partial molar volumes and apparent and partial molar expansionsibilities of these solutions have been determined from density data. The ultrasonic velocity and density data have also been used to evaluate various acoustic parameters such as isentropic compressibility, apparent isentropic molar compressibility, solvation number of the solute and relative association. The results are discussed in the light of solute –solvent interaction and structural effect of the solvents in solution.