A solution has 1 : 4 mole ratio of pentane to hexane . The vapour pressure of pure hydrocarbons at 20∘Care 440 mm Hg for pentane and 120 mm Hg for hexane .The mole fraction of pentane in the vapour phase would be For 0.1 M solution the colligative property will follow the order (a) NaCL > Na2SO4 > Na3PO4 (b) NaCL < Na2SO4 < Na3PO4 December 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related