Chapter 6 Colloids PDF
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These notes detail the topic of colloids. They cover definitions, types, and properties. The document also contains information on methods of preparation and stability of lyophobic colloids.
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CHAPTER 6 CHM432 COLLOIDS 1 D E FIN I T I O N D IF FE R EN C E S C H A R A C T ER I S T IC T Y PES O F CO L LO I D M E TH O D S O F PR E PA R A T I O N L Y OP H I L IC A N D L Y O H O B I C...
CHAPTER 6 CHM432 COLLOIDS 1 D E FIN I T I O N D IF FE R EN C E S C H A R A C T ER I S T IC T Y PES O F CO L LO I D M E TH O D S O F PR E PA R A T I O N L Y OP H I L IC A N D L Y O H O B I C C O L L O I D S S T A B IL I TY O F L YO P H O B I C C O L L O I D A colloid is a dispersion of particles of one substance(the dispersed phase) throughout a dispersing medium made of another substances 2 SIZE OF COLLOID The size of colloid particles is intermediate between the coarse suspension (which has tendency to settle) and ordinary solution (1 nm to 1000 nm.) Although colloidal particles are larger than simple molecules, they are small enough to remain suspended. 3 SIZE OF COLLOID 4 Types of system diameter(nm) Suspension > 1000 nm Colloidal solution 1 nm 1000 nm True solution
