Aim/Objective: To verify Rayleigh equation by conducting simple distillation on methanol – water system. To compare experimental (F/W) with that calculated from Rayleigh’s equation and with modified Rayleigh’s equation. Apparatus: Simple distillation experimental set-up 250 ml beakers 2 numbers 50 ml beaker specific gravity bottle (25 ml) thermometer. Equations: Rayleigh equation: (Check in R.E.Treybal) Modified Rayleigh equation: (Check in R.E.Treybal).