Question

z.124 AnTange the Oowng Sstances oTenICreasing mertng pous. ha, Seh, Se, ame Sng. 10.142 Predict the order of increasing boiling point for the following substances: SO3, SO2, Co2, CH3OH 10.138 Given that the boiling noints of ethanol and diethd ether are 78 1°C and 34 .62c respectively which s

Answer 1

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Dear student, bpt (ec) -10 °C 44. 8°C co -78.5°C Сң, оң 64.7°C The correct order of increasing boiling point is :- co < SO₂ <sO <CHOH Choh has the highest beiling point out of these because the intermolecular forces present are & dipole-dipole, hydrogen- bonding and dispersion forces. I So, has higher boiling point than soa; though so is non-polar and nature of intermolecular forces present are London- Dispersion forces but soz is significantly larger in size than so 2 ( London - Dispersion forces increases with increase in molecular size and as the surface larce increases); hence London dispersion forces for so are stronger than dipole forces in case of sog. co, has lowest bpt because it is non- polar and also nature of london dispersic forces are smaller as compared to that in soz (size of Co2 << so). Best wishes!!