question

(a) write the dispersed phase and dispersion medium of dust.

(b) why is physisortion reversible whereas chemisorption is irreversible?

(c) a colloidal sol is prepared by the method given in the figure. what is the charge on agi colloidal particles in the test tube? how is this sol represented?

    

 

 

 

 

 

 

 

 

(a) dispersed phase : solid

 dispersion medium : gas.

(b) physisorption is reversible whereas chemisorption is irreversible because it does not involve the formation of new compound while the latter does.

(c) negative,