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How will you prepare a colloidal sol of ...

How will you prepare a colloidal sol of arsenic suplhide ?s

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By passing `H_(2)S` gas through an aqueous solution of arseneous oxide `(As_(2)O_(3))`
`" "As_(2)O_(3)(aq)+3H_(2)S(g) toAs_(2)(s)underset(("colloidal sol"))(+3H_(2)O(l))`
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DINESH PUBLICATION-SURFACE CHEMISTRY -QUESTION FROM BOARD EXAMINATIONS
  1. What happens if an electric field is applied to a colloidal sol ?

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  2. How does chemical adsorption of a gas on the surface of a solid very w...

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  3. How will you prepare a colloidal sol of arsenic suplhide ?s

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  4. Which of the following has minimum flocculation value :-

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  5. What is Milk of Magnesia? For what purpose, is it used ?

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  6. What are surfactants ?

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  7. What is iso-electric point of colloids ?

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  8. What is syneresis or weeping of gels ?

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  9. Explain why dose feeric hydroxide sol get coagulate on addition of sol...

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  10. Why does a beam of light on passing through a colloidal solution have ...

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  11. Milk is an emulsion of fat dispersed in Water. What stabiliser stabili...

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  12. Can the same substance act both as colloid and crystalloid ?

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  13. If a strong beam of light is passed through a colloidal sol place in a...

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  14. Why does clear sky appear blue ?

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  15. Why are lypolhilic colloids more stable than hybrobic colloids ?

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  16. Give one example each of multimolecular and macro-molecular colloids.

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  17. What happens when colloidal solution of fe(OH)(3) and As(2)S(3) are mi...

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  18. What happens when freshly precipitated ferric hydroxide is treated wit...

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  19. Why is pyophobis sol easily congulated as compared to lyophilic sol ?

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  20. Mention two ways by which lyophobic colloids can be coagulated.

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