(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,
A. D.P - solid, D.M- gas
B. Because physorption is held by physical forces like vander wall forces which form very week bond or easily to break. But chemisorption is held by chemical bond . They are not easily breakable therefore physorption is reversible and chemisorption is irreversible.
C. Negetive Charge will generate on AgI