, [tex]\huge{\underline{\underline{\tt{\pink{Q} \orange{u}\red{e}\green{s}\purple{t} \pink{i}\red{o}\orange{n}\blue{:}}}}}[/tex]what is the meaning of t The process of coagulation can be carried out in the following ways: 2. Kinetics of coagulation Lyophobic dispersions are never stable in the thermodynamic sense, but exhibit some degree of instability. Colloidal solution coagulation is defined as the coagulation of a colloidal solution. Give three examples each: i. 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The syllabus for JEE Main Chemistry is based on the Class 11 th and Class 12 th board syllabus. 177 Views Answer To know more about the process of coagulation, you can register with BYJUS and download our app. Examples are starch, gelatin, gum sols, etc. (1) By electrophoresis: In electrophoresis the colloidal particles move towards oppositely charged electrode. The amount of electrolytes added to 1 litre of a colloidal solution to form coagulation or precipitation is called coagulation value. Also, you will learn a method of purification of sols. : types of colloids - sols - Lyophilic sols and lyophobic sols - properties of colloids - optical property (Tyndall effect) - kinetic property (Brownian movement) - Electrical properties like electrical double layer, zeta potential, electrophoresis and electro-osmosis - stability of colloids - Coagulation - protective colloids . Describe briefly and three methods by which coagulation of lyophobic sols can be carried out. Non-chemical condensation methods include the exchange of solvent or condensing vapours (for example, a colloid of Sulphur NH4NO3. Boiling of hard water removes temporary harness The coagulation of a negatively charged sol (As2S3)is done by adding a positively charged colloid. Chemical Kinetics a. End of preview. On addition of lyophilic sol to lyophobic sol, prevention from coagulation takes place in the sense that more amount of electrolyte is needed to . This can be done with an electrolyte or a suitable solvent. Since the force of interaction between the two phases in lyophilic sols is strong, they can be prepared quickly, or we can say even simply by mixing the particles in the dispersed phase with the liquid or medium. (CBSE Delhi 2016) Answer: Get answers to the most common queries related to the NEET UG Examination Preparation. At a fractional retention of 0.051 (n = 3), the coefficient of variation was 0.037, permitting meaningful estimation of collision efficiencies as low as 3 105. In this condition, even a small amount of electrolyte can trigger coagulation. Give the units of rate constant for zero, first & second order reaction. Ans: Lyophilic sols with water as the dispersion medium are known as hydrophilic sols. You can specify conditions of storing and accessing cookies in your browser. 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