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Questions and Answers
What is the dispersed phase in dispersed systems?
What is the dispersed phase in dispersed systems?
What is the size range of particles in colloidal dispersions?
What is the size range of particles in colloidal dispersions?
Which dispersed system classification consists of particles that are invisible in an electron microscope?
Which dispersed system classification consists of particles that are invisible in an electron microscope?
Which type of dispersion allows particles to pass through filter paper but not through a semi-permeable membrane?
Which type of dispersion allows particles to pass through filter paper but not through a semi-permeable membrane?
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What are examples of molecular dispersions?
What are examples of molecular dispersions?
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Study Notes
Dispersed Phase in Dispersed Systems
- The dispersed phase refers to the particles that are distributed or suspended within another medium, known as the continuous phase.
- This phase can consist of solid, liquid, or gas particles, depending on the type of dispersion.
Size Range of Particles in Colloidal Dispersions
- Colloidal dispersions contain particles typically ranging from 1 nanometer to 1 micrometer in diameter.
- These particles are larger than those found in true solutions but smaller than those in suspensions.
Classification of Dispersed Systems
- Molecular dispersions are classified as systems where the particles are too small to be seen even under an electron microscope.
- This classification includes particles in the range of less than 1 nanometer.
Dispersion Through Filter Paper and Semi-Permeable Membranes
- Colloidal dispersions allow particles to pass through filter paper while retaining particles that are larger than the colloidal size range.
- However, these particles cannot pass through semi-permeable membranes, which allow only smaller molecules such as water and ions.
Examples of Molecular Dispersions
- Examples of molecular dispersions include solutions of salts, sugars, or any small molecules dissolved in water.
- These dispersions exhibit a homogeneous mixture, where individual molecules are evenly distributed throughout the solvent.
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Description
Test your knowledge of dispersed systems and their classification based on particle diameter and size. Learn about molecular dispersions, colloidal dispersions, and coarse dispersions.
