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Disperse Systems Quiz

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Questions and Answers

What is a disperse system?

A system where one substance is dissolved in a second substance

A system where two substances are completely mixed together

A system where one substance is distributed in discrete units throughout a second substance (correct)

A system where two substances are separated by a barrier

What can the phases in a disperse system exist as?

Solid only

Solid, liquid, or gaseous (correct)

Liquid only

Gaseous only

What is the internal phase in a pharmaceutical suspension?

Dissolved solid particles

Gaseous particles

Insoluble solid particles (correct)

Soluble liquid particles

What are the reasons for the formulation of a pharmaceutical suspension?

<p>Pharmacokinetic modification, solubility and stability, liquid vs. solid dosage form, palatability</p> Signup and view all the answers

What is the range of size for insoluble solid particles in a pharmaceutical suspension?

<p>0.5 to 5 microns</p> Signup and view all the answers

Study Notes

Disperse Systems

A disperse system is a mixture in which one substance is dispersed in another substance, often in different phases.

Phases in Disperse Systems

The phases in a disperse system can exist as: • Solid-in-liquid (suspension) • Liquid-in-liquid (emulsion) • Gas-in-liquid (foam) • Solid-in-gas (aerosol)

Pharmaceutical Suspensions

In a pharmaceutical suspension, the internal phase is the insoluble solid particles of the active pharmaceutical ingredient (API).

Reasons for Formulation of Pharmaceutical Suspensions

Pharmaceutical suspensions are formulated: • To improve bioavailability of insoluble drugs • To mask unpleasant taste or odor of the API • To provide a more efficient method of administration • To reduce the frequency of dosing

Particle Size in Pharmaceutical Suspensions

The range of size for insoluble solid particles in a pharmaceutical suspension is typically between 0.1 μm and 100 μm.

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Description

Test your knowledge of disperse systems with this quiz. Explore the characteristics of dispersed and continuous phases, as well as the different states in which they can exist. Learn about suspensions and their composition.