Advertisements
Advertisements
प्रश्न
A colloidal sol is prepared by the given method in the figure. What is the charge on hydrated ferric oxide colloidal particles formed in the test tube? How is the solution represented?
Advertisements
उत्तर
If FeCl3 is added to NaOH, a negatively charged sol is obtained with adsorption of OH- ions. Sol is represented as Fe2O3.xH2O/OH- (negatively charged).
APPEARS IN
संबंधित प्रश्न
Define the following term : Brownian movement
What happens when an emulsion is centrifuged?
What causes brownian motion in colloidal dispersion?
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 |
Which of the following is used for removing change on colloidal solution?
Gold number is associated with:-
The right option for the statement “Tyndall effect is exhibited by”, is:
Define coagulation.
In order to cause coagulation of 100 ml Arsenious sulphide sol 111.7 mg of 2 M NaCl solution is used, the coagulation value of NaCl will be ______.
Lyophilic sols are more stable than lyophobic sols because ______.
