CHEM 1220 Chapter Notes - Chapter 13: Adsorption, Chloroform, Lattice Energy
9 Apr 2015
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Chapter 13: chemical solutions and their physical properties. 13-3 intermolecular forces and the solution process: some substances mix to form solutions, others do not. Some energy is required to overcome the forces of attraction between solvent molecules. Endothermic step: solute molecules must be separated from one another. Requires energy endothermic step: allow separated solvent and solute molecules to be attracted to one another. Molecules will be brought closer together and energy should be released. Exothermic step: the enthalpy of solution is the sum of the three enthalpy changes. Intermolecular forces in mixtures pure components. components: there is no overall enthalpy change in the formation of an ideal solution from its, includes many mixtures of liquid hydrocarbons. If forces of attraction between solute and solvent molecules are somewhat weaker than between molecules of the same kind, complete mixing may occur: forming solution is nonideal and the solution process is endothermic.
