![]() Recall that physical properties are determined to a large extent by the type of intermolecular forces. The OH groups of alcohol molecules make hydrogen bonding possible. 2).įigure 9.2 Intermolecular Hydrogen Bonding in Methanol. Replacing a hydrogen atom from an alkane with an OH group allows the molecules to associate through hydrogen bonding (Figure 9. This relationship is particularly apparent in small molecules and reflected in the physical and chemical properties of alcohols with low molar mass. Like the H–O–H bond in water, the R–O–H bond is bent, and the -OH portion of alcohol molecules are polar. ![]()
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