Methanol, CH3OH, is a good solvent for polar substances because: (1) Methanol undergoes dipole-dipole interactions. (2) Methanol is able to form hydrogen bonds with the polar substances. (3) There are weak ion-dipole interactions in methanol. (4) The van der Waals forces in methanol cause repulsion.
(1) Methanol undergoes dipole-dipole interactions
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