Emulsions in Pharmaceutics
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Questions and Answers

How is the emulsion type determined by the solubility of the emulsifying agent?

  • If the emulsifying agent is more soluble in water, a w/o emulsion will be formed
  • If the emulsifying agent is more soluble in water, an o/w emulsion will be formed (correct)
  • If the emulsifying agent is more soluble in oil, a w/o emulsion will be formed
  • If the emulsifying agent is more soluble in oil, an o/w emulsion will be formed
  • What is the primary function of emulsifying agents?

  • Promoting coalescence of droplets
  • Preventing the formation of barriers at the interface
  • Enhancing oil solubility in water
  • Reducing interfacial tension and maintaining dispersion stability (correct)
  • Which type of emulsion will be formed if the emulsifying agent is more soluble in oil?

  • W/O emulsion (correct)
  • Multiple emulsion
  • O/W emulsion
  • Inverted emulsion
  • What makes acacia a suitable emulsifying agent for oral emulsions?

    <p>Forms a thick film at the oil-water interface to act as a barrier to coalescence</p> Signup and view all the answers

    What is a characteristic of naturally occurring emulsifying agents?

    <p>Susceptible to microbial contamination</p> Signup and view all the answers

    What is the primary role of emulsifying agents in the production of a stable dispersion?

    <p>Reducing the droplet size</p> Signup and view all the answers

    Which type of emulsion will be formed if the emulsifying agent is more soluble in water?

    <p>Oil-in-water (o/w) emulsion</p> Signup and view all the answers

    What is the primary function of a naturally occurring emulsifying agent?

    <p>Creates a thick film at the oil-water interface</p> Signup and view all the answers

    What are the primary components of effective emulsifying agents?

    <p>Hydrophilic polar groups and lipophilic non-polar groups</p> Signup and view all the answers

    What is the role of emulsifying agents in the production of a stable dispersion?

    <p>Reducing interfacial tension and forming a barrier at the interface</p> Signup and view all the answers

    Why are naturally occurring emulsifying agents susceptible to microbial contamination?

    <p>As they come from animal or vegetable sources</p> Signup and view all the answers

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