Home
Class 12
CHEMISTRY
Why is chemisorption referred to as acti...

Why is chemisorption referred to as activated adsorption?

Text Solution

Verified by Experts

Chemisorption invoves formation of bond between gaseous atoms or molecules and the solid surface. This requires high activation energy. Thus, it is referred to as activated adsorption.
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    MODERN PUBLICATION|Exercise NCERT FILE (SOLVED) (NCERT EXEMPLAR PROBLEMS) (MATCHING TYPE QUESTIONS )|6 Videos

  • SURFACE CHEMISTRY

    MODERN PUBLICATION|Exercise NCERT FILE (SOLVED) (NCERT EXEMPLAR PROBLEMS) (ASSERTION AND REASON TYPE QUESTIONS)|5 Videos

  • SURFACE CHEMISTRY

    MODERN PUBLICATION|Exercise NCERT FILE (SOLVED) (NCERT EXEMPLAR PROBLEMS) (MULTIPLE COICE QUESTIONS (TYPE-II))|12 Videos

  • SOLUTIONS

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|14 Videos

Similar Questions

Explore conceptually related problems

Why are hormones referred to as chemical messengers?

Why is displacment referred to as a vector quantity?

Of physiosorption or chemisorption, which has a higher enthalpy of adsorption?

Chemisorption needs activation energy. Explain.

Which of the following statements is not true? a. Both physisorption and chemisorption are exothermic. b. Physisorption occurs with increase of free energy. c. Physisorption requires low activation energy but chemisorption requires high activation energy. d. The magnitude of chemisorption increases and that of physisorption decreases with rise in temperature.

Of physisorption and chemisorption which type of adsorption has a higher enthalphy of adsorption ?

MODERN PUBLICATION-SURFACE CHEMISTRY-NCERT FILE (SOLVED) (NCERT EXEMPLAR PROBLEMS) (SHORT ANSWER TYPE QUESTIONS)
  1. Why is it important to have clean surface in surface studies ?

    Text Solution

    |

  2. Why is chemisorption referred to as activated adsorption?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  7. What is collodion ?

    Text Solution

    |

  8. Why do we add alum to purify water ?

    Text Solution

    |

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

    Text Solution

    |

  10. What causes Brownian motion in colloidal dispersion?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  14. Why does leather get hardened after tanning ?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. Why does bleeding stop by rubbing moist alum?

    Text Solution

    |

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

    Text Solution

    |

  20. Why do physisorption and chermisorption behave differently with rise i...

    Text Solution

    |