Solution Chemistry

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UNIT IX

• Solution Chemistry
• Lesson 4 Dissociation vs ionization

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Review

• The formation of a solution depends on the
  ability of the solute to dissolve in the solvent.
• This interaction between the solute and the
  solvent is called Solvation

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Review
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Review

• NaCl dissolving in water
• http//www.northland.cc.mn.us/biology/biology1111/
  animations/dissolve.html

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IX.5 THE NATURE OF SOLUTIONS OF IONS

• DISSOCIATION
• Since NaCl already consisted of ions in an ionic
  bond, when they break apart in water. We refer to
  this as dissociation.
• NaCl(s) ----gt Na Cl-

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IX.5 THE NATURE OF SOLUTIONS OF IONS

• IONIZATION breaking up of a neutral molecule
  into ions
• Ex CH3COOH H2O ------gt CH3COO- H3O
• Usually covalently-bonded molecules, acids and
  bases all go through ionization

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Dissociation Ionization

• Both dissociation ionization produce
  electrically-conductive ionic solutions.
• Dissociation of FeBr3
• Ionization of HCN

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A few more vocabulary words

• IONIC SOLID
• MOLECULAR SOLID

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One last note

• Write an equation to show the dissociation of
  Na3PO4
• When dealing with polyatomic ions( such as PO4
  -3) never ever break the polyatomic ion itself
  apart!!!

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Homework