Customer Service Chat
Get quote & make Payment
what are the classification of colloids ?
Posted Date: 1/6/2013 9:13:30 AM | Location : Philippines
Ask an Expert
Colloids are classified as two types which are the lyophilic / reversible and lyophobic / irreversible. If water is the dispersion medium, then the term used are hydrophilic and hydrophobic.
Lyophilic colloids: A colloidal system which may be constructed readily by simple warming or shaking the substance in a suitable solvent is called as lyophilic colloid. Substances that form lyophilic colloids involves gelatin, starch, and rubber, proteins, gum. Lyophilic colloids are also named as reversible colloids as on evaporating the dispersion medium such as water, the substance or the residue may be again reconverted into colloidal state simply by addition of the liquid i.e. water. These solutions are reasonably stable and usually cannot be easily precipitated.
Lyophobic colloids: colloids constructed with difficulty are termed as lyophobic colloids. These colloids are constructed by substances such as As2S3 , Fe(OH)3, gold and other metals that are sparingly soluble and thus their molecules do not pass readily into colloidal state. Lyophobic colloids are called as irreversible colloids since the residue cannot readily be reconverted into sol by ordinary means. These solutions are quite readily precipitated and hence they are not stable.
| Posted Date: 1/12/2013 10:01:15 PM
colloid, Assignment Help, Ask Question on colloid, Get Answer, Expert's Help, colloid Discussions
Write discussion on colloid
Your posts are moderated
Write your message here..
Law of combination, simply explanation
Ninhydrin test- test of proteins, Ninhydrin test- test of proteins Ninh...
Ninhydrin test- test of proteins Ninhydrin test : This test is specified by all proteins. While a protein is boiled along with a dilute solution of ninhydrin, a violet colour i
Quantum mechanical model of the atom, The frequency of strong yellow light ...
The frequency of strong yellow light in the spectrum of sodium is 5.09•10*14s calculated the wavelength of light
.bohr''s atomic model, what were the drawbacks of bohr''s atomic theory
what were the drawbacks of bohr''s atomic theory
The color of b-carotene, The color of b-carotene The color of b-caroten...
The color of b-carotene The color of b-carotene is because of its chromophore of extensively conjugated double bonds. Catalytic hydrogenation would result in addition of hydrog
Vbt, limitation of vbt
limitation of vbt
Physical properties of alkynes - hydrocarbon, Physical properties of Alkyne...
Physical properties of Alkynes (a) it is a colourless gas. It comprises a garlic odour. The odour is because of existence of impurities of phosphorous and hydrogen sulphide. Th
Describe about electron configurations, Q. Describe about Electron Configur...
Q. Describe about Electron Configurations? As you will study the number and arrangement of electrons around the nucleus of an atom determines its chemical properties. Consequen
Surface chemistry.., explanation
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
Why Us ?
~24x7 hrs Support
~Quality of Work
~Time on Delivery
~Privacy of Work
Human Resource Management
Literature Review Writing Help
Terms & Conditions
Copyright by ExpertsMind IT Educational Pvt. Ltd.