Theories of Emulsification
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Questions and Answers

What type of emulsions do emulsifying agents with a greater hydrophilic character tend to promote?

  • Oil-in-water emulsions (correct)
  • Water-in-water emulsions
  • Water-in-oil emulsions
  • Oil-in-oil emulsions
  • According to the Plastic or Interfacial Film Theory, where do emulsifying agents position themselves?

  • Between immiscible liquids (correct)
  • Outside the emulsion system
  • Within the dispersed phase
  • Within the continuous phase
  • What property of the emulsifying agent determines whether oil-in-water or water-in-oil emulsions are formed?

  • Thickness of the film
  • Flexibility of the film
  • Toughness of the film
  • Solubility in the two phases (correct)
  • In which phase does the emulsifier with higher solubility become the continuous phase of the emulsion?

    <p>Continuous phase (C)</p> Signup and view all the answers

    What effect does a greater hydrophobic character of an emulsifying agent have on emulsions?

    <p>Promotes water-in-oil emulsions (D)</p> Signup and view all the answers

    What is the main function of emulsifying agents in the Surface Tension Theory of emulsification?

    <p>Reduce interfacial tension (C)</p> Signup and view all the answers

    According to the Surface Tension Theory, what shape do all liquids tend to form to minimize their surface area?

    <p>Spherical (A)</p> Signup and view all the answers

    In the Oriented-Wedge Theory, where do emulsifying agents orient themselves around the droplets?

    <p>Around the droplets (C)</p> Signup and view all the answers

    What role does surface tension play in resisting the formation of smaller droplets in emulsification?

    <p>It reduces the attractive forces between liquids (C)</p> Signup and view all the answers

    How does the Oriented-Wedge Theory explain the orientation of emulsifying agents in immiscible liquids?

    <p>They are preferentially soluble in one phase (A)</p> Signup and view all the answers

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