Web28 mar. 2024 · We should know that a protective colloid is a lyophilic colloid that when present in small quantities keeps lyophobic colloids from precipitating under the coagulating action of electrolytes. We should know that lyophilic sols are more stable than lyophobic sols. It is due to the fact that lyophilic colloids are extensively solvated that means ... WebThere are two principal factors which are responsible for the stability of lyophilic sols - charge and solvation of the colloidal particles. If we manage to remove these two factors, a lyophilic sol can be coagulated. This could be accomplished by. (i) Adding an excess of electrolyte. (ii) Adding a suitable solvent.
Preparation of Lyophilic and Lyophobic Sols - unacademy.com
Web25 iul. 2024 · Lyophilic sols can be directly prepared by mixing liquid and colloid, and therefore these sols are stable and do not get easily precipitated. But by adding electrolytes in large quantities, the particles can be precipitated. However the quantity of liquid is again increased in the solution, the lyophilic properties can regain the sol, and this ... Web26 mar. 2024 · Hint : Lyophilic sols are more stable than lyophobic sols, lyophobic sols can be easily coagulated by the addition of a small quantity of an electrolyte. Lyophilic sols are solvent-loving while lyophobic sols are solvent-hating. Complete Step By Step Answer: A protective colloid is a lyophilic colloid that when present in small quantities keeps … lithuanian airlines international flights
Lyophilic sols are reversible whereas lyophobic sols are irreversible ...
WebMultimolecular colloids consist of aggregates of many atoms or smaller molecules (diameter< 1 nm). These colloids usually have lyophobic character. Eg: gold and sulphur sols. Small molecules (or atoms) are held together by weak Van der Waal interactions. Usually, these colloids have a lyophobic nature. This means these colloids have less or … WebThe stability of lyophilic sols is a result of two factors, the presence of a charge and the solvation of colloidal particles. On the other hand, the stability of lyophobic sols is only because of the presence of a charge. Thus, the lyophilic sol is more stable than lyophobic sol due to the extensive solvation. Web25 oct. 2024 · Lyophilic sols (colloids): Lyophilic sols are formed easily by direct mixing. They are reversible. These are self-stabilized. Addition of large amount of electrolytes causes precipitation or coagulation of lyophilic sols. Viscosity of lyophilic sol is much higher than that of the dispersion medium. Surface tension of lyophilic sol is lower than ... lithuanian alcoholic drinks