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Questions and Answers
What is the dispersed phase in emulsions?
What is the dispersed phase in emulsions?
- A liquid that is fully soluble in the dispersing phase
- A solid substance distributed throughout a liquid medium
- A liquid that is neither soluble nor miscible with the dispersing phase (correct)
- A gas that is dispersed in a liquid medium
What is the purpose of preparing suspensions?
What is the purpose of preparing suspensions?
- Long shelf life
- Stability, ease of administration, taste masking (correct)
- High solubility
- Immediate drug release
What are the particles size range for colloidal dispersions?
What are the particles size range for colloidal dispersions?
- Less than 0.5 μm
- 0.5 to 10 μm (correct)
- 10 to 50 μm
- More than 50 μm
What is the dispersed phase in aerosols?
What is the dispersed phase in aerosols?
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What is the dispersing phase in a colloidal dispersion?
What is the dispersing phase in a colloidal dispersion?
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Study Notes
Emulsions
- The dispersed phase in emulsions refers to the phase that is dispersed or broken down into droplets, usually a liquid, and is scattered throughout another liquid.
Suspensions
- The purpose of preparing suspensions is to create a uniform mixture of two or more substances, where one substance is suspended in another, often for pharmaceutical or medical applications.
Colloidal Dispersions
- Colloidal dispersions have particle sizes ranging from 1 - 100 nanometers (nm) in diameter.
- The dispersing phase in a colloidal dispersion is the medium or substance in which the particles are dispersed, such as a liquid or gas.
Aerosols
- The dispersed phase in aerosols refers to the solid or liquid particles that are suspended in a gas, such as air or oxygen.
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