What is meant by coagulation of a colloidal solution ? Describe briefly any three methods by which coagulation of lyophobic sols can be carried out.

Write a method by which lyophobic colloids can be coagulated.

Method by which lyophobic sol can be protected.

Mention two ways by which lyophilic colloids can be coagulated.

In coagulation of a (colloidal) solution of As_2S_3 , which has maximum coagulating power ?

coagulation is the process by which the dispersed phase of a colloid is made to aggregate and thereby separate from the continuous phase. The minimum concentration of an electrolyte in mili-moles per litre of the electrolyte solution which required to cause the coagulation of colloidal sol is called coagulation value . therefore higher is the coagulating power of effective ion, smaller will be the coagulation value of the electrolyte. the coagulation of colloidal particles to the sol can be caused by : heating, adding electrolyte, adding oppositely charged sol, all of these.

coagultion is the process by which the dispersed phase of a colloid is made to aggregate and thereby separtate from the continuous phase. The minimum concetration of an eletrolyte in milli-moles per litre of the electrolyte solution which required to cause the caogultion of colloidal sol is called coagution value . therefroe higher is the coagulatings power of effective ion, smaller will be the coagultion value of the electrolyte. coagultion value propto = 1/("coagulating power") the coagulation values of differnt electrolytes are different . this behavious can be easily uderstood by Harby - schulze rule which states. the greater is the valency of the effective ion grreater is its coagulating power," which one had the highest coagulating powe?

coagultion is the process by which the dispersed phase of a colloid is made to aggregate and thereby separtate from the continuous phase. The minimum concetration of an eletrolyte in milli-moles per litre of the electrolyte solution which required to cause the caogultion of colloidal sol is called coagution value . therefroe higher is the coagulatings power of effective ion, smaller will be the coagultion value of the electrolyte. the ability of an ion to bring about coagulation of a given colloid depends upon :

select the false statement (S) : Brownian motion and Tyndall effect are shown by true solutions, sorption process is combinations of adsorption and absorption process, Law Hardy schulze is related with coagulation of a sol, Higher is the gold number greater will be the protective power of a colloid.