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Why is it important to have clean surfac...

Why is it important to have clean surface in surface studies ?

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It is important to have a clean surface so that they are not covered by the gases of the air `(O_(2), N_(2)` etc.)and surface is available for adsorption of desired gases.
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PRADEEP-SURFACE CHEMISTRY -SHORT ANSWER QUESTIONS
  1. Why is it important to have clean surface in surface studies ?

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  2. Why is chemisorption referred to as activated adsorption?

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  3. What type of solutions are formed on dissolving different concentratio...

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  4. What happens when gelatin is mixed with gold sol ?

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  5. How does it become possible to cause artificial rain by spraying silve...

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  6. Gelatin which is a peptide is added in ice-creams. What can be its ro...

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  7. What is collodion ?

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  8. Why do we add alum to purify water ?

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  9. What happens when aeledtric field is applied to colloidal solution ?

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  10. What causes Brownian motion in colloidal dispersion?

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  11. A colloid is formed by adding FeCl(3) in excess of hot water. What wil...

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  12. How do emulsifiers stabilise emulsion ? Name two emulsifiers.

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  13. Why are some medicines more effective in the colloidal form ?

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  14. Why does leather get hardened after tanning ?

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  15. How does the precipitation of colloidal smoke take place in Cottrell p...

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  16. How will you distiguish between dispersed phase and dispersion medium ...

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  17. On the basis of Hardy-schulze rule explain why the coagulating power o...

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  18. Why does bleeding stop by rubbing moist alum?

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  19. Why is Fe(OH)(3) colloid positively charged when prepared by adding Fe...

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  20. Why do physisorption and chemisorption behave differently with rise in...

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