Surface tension is a physical property that examines theoretical and experimental .More theories that used for calculation of surface tension; use the value of the molar surface area of the compounds as input data. So long as the molar surface area can be calculated from different models, it is the mean source of error to apply these theoretical models. In the present work, partial surface molar areas in binary organic mixtures using experimental density of solution were calculated and variations of partial surface molar area versus composition were studied
