7.5 Aqueous Solutions and Solubility: Compounds Dissolved in Water A compound is soluble in a particular liquid if it dissolves in that liquid. A compound.

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Presentation transcript:

7.5 Aqueous Solutions and Solubility: Compounds Dissolved in Water A compound is soluble in a particular liquid if it dissolves in that liquid. A compound is insoluble if it does not dissolve in the liquid. An aqueous solution is a homogeneous mixture of a substance with water. When ionic compounds dissolve in water, they usually dissociate into their component ions.

7.5 Aqueous Solutions: NaCl Dissolves in Water

FIGURE 7.6 Ions as conductors Strong Electrolyte Solutions Solutions such as NaCl(aq) are called strong electrolyte solutions.

7.5 Aqueous Solutions: AgNO3

7.5 Aqueous Solutions: AgCl Does Not Dissolve in Water

7.6 Precipitation Reactions: Reactions in Aqueous Solution That Form a Solid Potassium iodide + lead (II) nitrate  Before mixing, the compounds are both dissociated in their respective solutions.

7.6 Precipitation Reactions: Reactions in Aqueous Solution That Form a Solid Potassium iodide + lead (II) nitrate  lead (II) iodide + potassium nitrate

7.6 Precipitation Reactions: Reactions in Aqueous Solution That Form a Solid Potassium iodide + sodium chloride  lead (II) iodide + potassium nitrate

Complete ionic equations show aqueous ionic compounds that normally dissociate in solution as they are actually present in solution. 7.7 Writing Chemical Equations for Reactions in Solution: Molecular and Complete Ionic Equations Do NOT separate solid, liquid, or gaseous compounds. A molecular equation is an equation showing the complete neutral formulas for every compound in the reaction. Separate ONLY aqueous ionic compounds into their constituent ions

These ions are called spectator ions because they do not participate in the reaction. 7.7 Writing Chemical Equations for Reactions in Solution: Net Ionic Equations