IPS Chapter 4

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IPS Chapter 4

• Solubility

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Definitions

• Mixture
• A physical combination of elements and/or
  compounds.
• Components keep their identity

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Definitions

• Homogeneous- Consistent composition within the
  sample (Solution)
• Coke, Gatorade, air
• Heterogeneous- Different composition within same
  sample
• Blood, pizza, rocks

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Parts of a Solution

• Solute
• Part which is dissolved- usually solid
• Solvent
• Part in which solute is dissolved- usually liquid
• Precipitate
• Undissolved solid

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How much is dissolved?

• Saturated
• No more solute can be dissolved
• Unsaturated
• More can be dissolved
• Supersaturated
• More solute is added than can be dissolved-
  Precipitate forms

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Concentration

• How much solute is dissolved in a solvent
• Expressed in g/cm3
• How does this differ from density since density
  uses the same unit?
• Density refers to one substance, while
  concentration refers to two.
• Divide mass of solute by volume of solvent to
  determine concentration

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Solubility

• The maximum amount of solute that can be
  dissolved in a solvent.
• The concentration of a saturated solution
• Expressed in g/100cm3
• Multiply concentration by 100
• Is a Characteristic property of the solute in
  that solvent.
• Dependent on temperature

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Other definitions

• Soluble
• Can be dissolved
• Insoluble
• Cannot be dissolved

• Mixtures of gases and liquids
• Miscible
• Can be mixed
• Immiscible
• Cannot be mixed