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Langmuir Isotherm...

Langmuir Isotherm

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Derive the following: a. Langmuir iostherm b. Freundlich iostherm

Adsorption isotherm||Frendlich isotherm|| Langmiar's isotherm||Adsorption from solution||Catalysis ||Types OF catalysis||Promotors||Poison

Knowledge Check

  • Which of the following statements are correct with respect to adsorption of gases on a solid ? (i) The ectent of adsorption is equal to KP^(n) according to Freundlich isotherm. (ii) The extent of adsorption is equal to KP^(1//n) according to Frendlich isotherm. (iii) The extent of adsorption is equal to (1+bP)/aP according to Langmuir isotherm. (iv) The extent of adsorption is equal to aP/(1+bP) according to Langmuir isotherm. (v) Freundlich adsorption isotherm fails at low temperature.

    A
    (i) and (ii)
    B
    (i) and (iv)
    C
    (ii) and (iii)
    D
    (ii) and (iv)

  • Which among the following statements are correct with respect to adsorption of gases on a solid ? 1. The extent of adsorption is equal to k P ^(n) according to Freundlich isotherm. 2. The extent of adsorption is equal to k P^(1//n) according to Freundlich isotherm. 3. The extent of adsorption is equal (1+b P)//aP according to Langmuir isotherm. 4. The extent of adsorption is equal to a P (1+b P) according to Langmuir isotherm. 5. Freundlich adsorption isotherm fails at low pressure.

    A
    1 and 3
    B
    1 and 4
    C
    2 and 3
    D
    2 and 4

  • Which among the following statement are correct with respect to adsorption of gases on a solid ? (1) The extent of adsorption is equal to kp^(n) according to Freundlich isotherm (2) The extent of adsorption is equal to kp^(1//n) according to Freundlich isotherm (3) The extent of adsorption is equal ((a+bp))/(ap) according to Langmuir isotherm The extent of adsorption is equal (ap)/((1+bp)) according to Langmuir isotherm (5) Freundlich adsorption fails at a low pressure

    A
    1 and 3
    B
    1 and 4
    C
    2 and 3
    D
    2 and 4

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    Andrew Isotherm

    Consider the following statement about Langmuir isotherm : (i) The free gas and adsorbed gas are in dynamic equilibrium (ii) All adsorption sites are equivalent (iii) The initially adsorbed layer can act as a substrate for further adsorption. (iv) The ability of a molecule to get adsorbed at a given site is independent of the occuption of neighbouring sites The correct statement are

    An adsorption isotherm equation proposed by Langmuir is of the form V = (V_(0)bPO)/((1 + bP)) where V is the volume of gas adsorbed at pressure P. For a given adsorbate/adsorbent system, V_(0) and b are constants. The dependence of V on P can be depicted as

    For Langmuir adsorption isotherm, which is correct?

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