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(a) Explain how phenomenon of adaorption...

(a) Explain how phenomenon of adaorption findss application in heterogeneous catlysis ?
(b) Which of the following electrolytes in the most effective for the coagulation of `(Fe(OH)_(3))`sol, that is positively charged ?
`NaCl,Na_(2)SO_(4),Na_(3)PO_(4).`

Text Solution

Verified by Experts

(a) For answer, consult section 10.
(b) `PO_(4)^(3-)` ionis the most effective for the coagulation of a positively charged sol. This is bases on Hardy Schulze law.
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(a) A colloidal sol is prepared by the given method in figure. What is the charge of AgI colloidal particles in the test tube ? How is the sol formed, represented? (b) Explain how the phenomenon of adsorption finds application in Heterogeneous catalysis. (c) Which of the following electroytes is the most effective for the coagulation of Fe(OH)_(3) sol which is a positively charged sol? NaCI, Na_(2)SO_(4), Na_(3)PO_(4)

Which of the following will be the most effective in the coagulation of Fe(OH)_(3) sol ?

The electrolyte which has the least effect in the coagulation of Fe(OH)_3 sol is

Which one of the following electrolytes is most effective for the coagulation of Fe(OH)_(3) sol and why? NaCl, Na_(2)SO_(4),Na_(3)PO_(4)

DINESH PUBLICATION-SURFACE CHEMISTRY -QUESTION FROM BOARD EXAMINATIONS
  1. Adsorption is always exothermic in nature , Do you agree ?

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  2. According to Hardy Schulze rule, the power of coagulation of an ion de...

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  3. What is sorption.

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  4. Why are powdered substance more effective adsorbent than their crystal...

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  5. Homogeneous And Heterogeneous Catalysis

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  6. Write the main reason for the stability of colloidal sols.

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  7. Difine the following terms : (i) Pepization (ii) Zeta potential (iii...

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  8. What are associated colloids ?

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  9. Write one similarity between physisorption and chemisorption.

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  10. Write one difference in each of the following: (i) Lyophobic and Lyo...

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  11. How is Brownain movement responsible for the stability of sol ?

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  12. Name the promoter used in the Haber's process for the manufacture of a...

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  13. The charge on the lyophobic sol particles is due to

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  14. What is an adsorption isotherm? Describe Freundlich adsorption isother...

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  15. What happens when : (a) freshly prepared precipitate of Fe(OH)(3) is...

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  16. (a) Explain how phenomenon of adaorption findss application in heterog...

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  17. Adsorption of gases on solid surface is exothermic because :

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  18. Write differences between physisorption and chemisorption.

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  19. (a) What is Electrophoresis ? (b) What are catalytic promoters ? Giv...

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  20. (a) Write two difference between lyophilic and lyophobic colloids. (...

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