Home
Class 12
CHEMISTRY
The Langmuir adsorption isotherm is dedu...

The Langmuir adsorption isotherm is deduced using the assumption.

A

the adsorption takes place in multilayers

B

the adsorption sites are equivalent in their ability to adsorb the particles

C

the heat of adsorption varies with coverage

D

the adsorbed molecules interact with each other

Text Solution

Verified by Experts

The correct Answer is:
B
The main points of Langmuir's theory of adsorption are as
(i) Adsorption takes place on the surface of the solid only till the whole of the surface is completely covered with a unimolecular layer of the adsorbed gas.
(ii) Adsorption consist of two opposing processes (a) condensation and (b) evaporation.
(iii) The rate of condensation depend upon the uncovered surface of the adsorbent available for condensation.
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|77 Videos

  • THERMODYNAMICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTIONS|68 Videos

Similar Questions

Explore conceptually related problems

Freundlich adsorption isotherm is

Langmuir adsorption isotherm is best suitable for

Freundlich adsorption isotherm is obeyed by the adsorption where the adsorbate forms a multimolecular layer on the surface of adsorbent .In such cases, the degree of adsorption varies linearly with pressure but at high pressure, it becomes independent of pressure The relation of Freundlich adsorption isotherm is : (x)/(m)=kP^(1//n) where ,K and n are constants. Langmuir adsorption isotherm is obeyed by the adsorption where the adsorbate forms only a unimolecular adsorbed layer. The mathematical relation of Langmuir isotherm is : (x)/(m) = (aP)/(1+bP) Freundlich adsorption isotherm is valid for chemisorption . (a) True (b) False

Freundlich adsorption isotherm is obeyed by the adsorption where the adsorbate forms a multimolecular layer on the surface of adsorbent .In such cases, the degree of adsorption varies linearly with pressure but at high pressure, it becomes independent of pressure The relation of Freundlich adsorption isotherm is : (x)/(m)=kP^(1//n) where ,K and n are constants. Langmuir adsorption isotherm is obeyed by the adsorption where the adsorbate forms only a unimolecular adsorbed layer. The mathematical relation of Langmuir isotherm is : (x)/(m) = (aP)/(1+bP) In the mathematical relation of Freundlich adsorption isotherm ,the value of (1/n) is 0 le (1)/(n) le 1 . (a) True (b) False

Freundlich adsorption isotherm is obeyed by the adsorption where the adsorbate forms a multimolecular layer on the surface of adsorbent .In such cases, the degree of adsorption varies linearly with pressure but at high pressure, it becomes independent of pressure The relation of Freundlich adsorption isotherm is : (x)/(m)=kP^(1//n) where ,K and n are constants. Langmuir adsorption isotherm is obeyed by the adsorption where the adsorbate forms only a unimolecular adsorbed layer. The mathematical relation of Langmuir isotherm is : (x)/(m) = (aP)/(1+bP) The degree of adsorption (x/m) at low pressure will be : (x)/(m) =a (a) True (b) False

Freundlich adsorption isotherm is obeyed by the adsorption where the adsorbate forms a multimolecular layer on the surface of adsorbent .In such cases, the degree of adsorption varies linearly with pressure but at high pressure, it becomes independent of pressure The relation of Freundlich adsorption isotherm is : (x)/(m)=kP^(1//n) where ,K and n are constants. Langmuir adsorption isotherm is obeyed by the adsorption where the adsorbate forms only a unimolecular adsorbed layer. The mathematical relation of Langmuir isotherm is : (x)/(m) = (aP)/(1+bP) When "log"((x)/(m)) is plotted against log P, we get a straight line with slope (1/n). (a) True (b) False

Freundlich adsorption isotherm is obeyed by the adsorption where the adsorbate forms a multimolecular layer on the surface of adsorbent .In such cases, the degree of adsorption varies linearly with pressure but at high pressure, it becomes independent of pressure The relation of Freundlich adsorption isotherm is : (x)/(m)=kP^(1//n) where ,K and n are constants. Langmuir adsorption isotherm is obeyed by the adsorption where the adsorbate forms only a unimolecular adsorbed layer. The mathematical relation of Langmuir isotherm is : (x)/(m) = (aP)/(1+bP) When ((x)/(m)) is plotted against (1)/(p) ,we get a straight line slope (1/a) and intercept (b/a). (a) True (b) False

What is an adsorption isotherm ?

For Langmuir adsorption isotherm, which is correct?

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-SURFACE CHEMISTRY -MCQ
  1. The coagulation value in millimoles per litre of the electrolyes used ...

    Text Solution

    |

  2. Suspension of slaked lime in water is known as

    Text Solution

    |

  3. Which property of colloids is not dependent on the change on colloidal...

    Text Solution

    |

  4. Which of the following statements of correct for the spontaneous adsop...

    Text Solution

    |

  5. In frenudlich adsorption isotherm, the value of 1//n is

    Text Solution

    |

  6. Which one of the following statements is incorrect about enzyme catal...

    Text Solution

    |

  7. The protcting power of lyophilic colloidal solution is expressed in te...

    Text Solution

    |

  8. If x is the amount of adsorbate and m is the amount of adsorbent, whic...

    Text Solution

    |

  9. The Langmuir adsorption isotherm is deduced using the assumption.

    Text Solution

    |

  10. For adsorption of a gas on a solid, the plot of log (x//m) vs log P is...

    Text Solution

    |

  11. Which one of the following forms micelles in aqueous solution above ce...

    Text Solution

    |

  12. which of the following forms cationic micelles above certain concentra...

    Text Solution

    |

  13. According to the adsorption theory of catalysis the speed of the react...

    Text Solution

    |

  14. Position of non-polar and polar parts in micelle is

    Text Solution

    |

  15. Which is not correct regarding the adsorption of a gas on surface of a...

    Text Solution

    |

  16. The method usually employed for the precipitation of a colloidal solut...

    Text Solution

    |

  17. At CMC, the surfactant molecules :

    Text Solution

    |

  18. The ability of ion to bring about coagulation of a given collidal solu...

    Text Solution

    |

  19. During dialysis

    Text Solution

    |

  20. If a beam of light is passed through true solution, then it is

    Text Solution

    |