Intermolecular forces belong to the multiple-choice test points, often combined with chemical bonds, including the stability of molecules, the solubility of substances, etc. When doing the question, it is necessary to consider the essential difference between the intermolecular forces and the chemical bonds.
【Example Question Refining】
The following explanation of the properties of molecules is incorrect ( ).
c. Iodine, methane, carbon tetrachloride are non-polar molecules, water is a polar molecule, so iodine, methane is easily soluble in carbon tetrachloride, water solubility is small, so c is correct;
d. The number of non-hydroxy oxygen atoms of h3po4 is more than that of hclo, and the more non-hydroxy oxygen atoms in the oxygen-containing acid, the stronger the acidity, so the acidity of phosphoric acid is stronger than that of hypochlorous acid, so d is correct; Hence the choice: a.
Focus on the effect of hydrogen bonds on the properties of substances, isomers, solubility laws of substances, comparison of the strength and weakness of oxyacid acids, strong comprehensive topics, medium difficulty, pay attention to the accumulation of relevant knowledge, pay attention to the nature of mutual dissolution of substances and the polarity and non-polarity of molecules.