Aqueous Solutions - ODU

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1Types of Chemical ReactionsandSolution StoichiometryAqueous SolutionsWater is the dissolving medium, or Properties of Water Water is bent or V-shaped. The O-H bonds are covalent. Water is a polar molecule. Hydration occurs when salts dissolve in : (Left) The water molecule is polar. (Right) A space-filling model of the water : (a) The ethanol molecule contains a polar O H bond similar to those in the water molecule. (b) The polar water molecule interacts strongly with the polar O H bond in ethanol. This is a case of "like dissolving like."A Solute dissolves in water (or other solvent ) changes phase (if different from the solvent) is present in lesser amount (if the same phase as the solvent)2A Solvent retains its phase (if different from the solute) is present in greater amount (if the same phase as the solute)Ions in Aqueous Solution Some molecular compounds dissolve but do not dissociate into ions.

3 Figure 4.4: Electrical conductivity of aqueous solutions. Thus, in general, ionic solids that dissolve in water are electrolytes. Some molecular compounds, such as acids, also dissociate in aqueous solution and are considered electrolytes.. Ions in Aqueous Solution

  Solutions, Electrical, Conductivity, Aqueous, Aqueous solutions, Electrical conductivity of aqueous