Advertisements
Advertisements
Question
Comment on the statement:
Colloid is not a substance but it is a state of substance.
Solution
The statement is true. Because the same substance may exist as a colloid under certain conditions and as a crystalloid under certain other conditions. For example, NaCl in water behaves as a crystalloid while in benzene, it behaves as a colloid. Similarly, dilute soap solution behaves like a crystalloid while concentrated solutions behave like a colloid. It is the size of the particles which matters. That is the state in which the substance exists. If the size of the particles lies in the range of 1 nm to 100 nm, it is in the colloidal state.
APPEARS IN
RELATED QUESTIONS
The most effective electrolyte for the coagulation of As2S3 Sol is ____________.
The phenomenon observed when a beam of light is passed through a colloidal solution is ____________.
In an electrical field, the particles of a colloidal system move towards the cathode. The coagulation of the same sol is studied using
I. K2SO4
II. Na3PO4
III. K4[Fe(CN)6]
IV. NaCI
Their coagulating power should be
Collodion is a 4% solution of which one of the following compounds in the alcohol-ether mixture?
Peptising agent is added to convert precipitate into colloidal solution. Explain with an example.
Why does the bleeding stop by rubbing moist alum?
Explain any one method for coagulation.
Write a note on electro osmosis.
Which one of the is not a surfactant?
Which one of the is not a surfactant?
