Liquid hydrogen fluoride physical properties

Although no attempt will be made to describe the chemistry of all of the nonaqueous solvents listed in Table 5.4, the survey to this point has included ammonia as a basic solvent and liquid hydrogen fluoride as an acidic solvent. Another solvent that has been extensively utilized in both inorganic and organic chemistry is sulfur dioxide. Accordingly, we will give a brief survey of the chemistry of liquid sulfur dioxide for which the physical properties are presented in Table 5.8. 

Hydrogen fluoride, HF, and methane, CH4, are compounds of the other kind. Both are gases at room temperature and pressure. When condensed to liquids, they are nonconductors, like water. These are molecular compounds, whose ultimate structural unit is an individual particle known as a molecule. The physical and chemical properties of a molecule are different from the properties of the atoms that make up the molecule. 

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