Pharmaceutical Dosage Forms I Lecture 6 Quiz
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Questions and Answers

What are the optical properties of colloidal dispersion?

Faraday-tyndall effect (light scattering)

What are the kinetic properties of colloidal dispersion?

Brownian motion, diffusion, osmosis, sedimentation, viscosity

What are the sources of electric charge on the particles in colloidal dispersion?

Not provided

What is the isoelectric point?

<p>Not provided</p> Signup and view all the answers

How is the Faraday-Tyndall effect (light scattering) used in colloidal dispersions?

<p>To determine the molecular weight of the colloid and to obtain information about the shape and size of the particles</p> Signup and view all the answers

What property is used to determine the molecular weight of a colloid and obtain information about the shape and size of its particles?

<p>Light scattering (Faraday-Tyndall effect)</p> Signup and view all the answers

Which property causes true solutions to appear clear and colloidal dispersions to appear turbid?

<p>Light scattering (Faraday-Tyndall effect)</p> Signup and view all the answers

What causes the visible cone resulting from the scattering of light by colloidal particles in a Faraday-Tyndall effect?

<p>Electric charge on particles</p> Signup and view all the answers

Which process in colloidal dispersions involves the random movement of particles due to collisions with solvent molecules?

<p>Diffusion</p> Signup and view all the answers

What is the term for the point at which a colloid has no net electrical charge and therefore tends to aggregate?

<p>Isoelectric point</p> Signup and view all the answers

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