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(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?

    

 

 

 

 
 
 
 
 

Answers (2)

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(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, AgI/I^-

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Sumit Saini

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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 

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Aarti Gurung

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