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Question
Answer the following question.
Why are medicines more effective in the colloidal state?
Solution
Some medicines are more effective in colloidal form because medicine in colloidal form is easily absorbed by the body tissues.
For example, Antibiotics like streptomycin in the form of the colloidal sol is injected into the body for the more effective result.
RELATED QUESTIONS
Define the following terms: Associated colloids
Explain what is observed An electrolyte, NaCl is added to hydrated ferric oxide sol.
Explain the term Electrophoresis
Explain the terms Coagulation
Match the statement given in Column I with the phenomenon given in Column II.
| Column I | Column II |
| (i) Dispersion medium moves in an electric field | (a) Osmosis |
| (ii) Solvent molecules pass through semi permeable membrane towards solvent side |
(b) Electrophoresis |
| (iii) Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes |
(c) Electroosmosis |
| (iv) Solvent molecules pass through semi permeable membranes towards solution side |
(d) Reverse osmosis |
Assertion: Coagulation power of Al3+ is more than Na+.
Reason: Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy Schulze rule).
What is Gold number?
Gold number of protective colloids A, Band Dare 0.50, 0.01 and 0.10 and 0.005. The correct order of their protecting power is
The important factor in the stabilization of a colloidal solution is ______
Lyophilic sols are more stable than lyophobic sols because ______.
