The density (ρ), viscosity (η) and speeds of sound (u) of pure components and their binary liquids mixtures of p-chloroacetophenone (PCA) with n-pentane (PEN), n-hexane (HEX) and n-heptane (HEP) had been reported at T = 308.15 K over the whole range of composition under atmospheric pressure. Experimental data used to compute the excess molar volume (???????? ???? ), deviation in viscosity (Δη) and deviation in isentropic compressibility (Δκs), and these parameters interrelated to Redlich-Kister (R-K) equation using multi parametric non-linear regression analysis to evaluate the binary coefficients and standard deviations. Furthermore, excess Gibbs free energy of activation of viscous flow (G *E) and Grunberg-Nissan interaction parameter (???? ′ ) were also computed from the experimental data. These derived parameters used to understand the type of intermolecular forces presented between unlike molecules of investigated binary mixtures