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).