EFFECT OF PRESSURE- FREUNDLICH ISOTHERM...

EFFECT OF PRESSURE- FREUNDLICH ISOTHERM

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Effect of Pressure- Freundlich Isotherm

What is Adsorption Isotherm?

It is a curve that tells about the variety in the quantity of gas adsorbed by the adsorbent material with pressure at constant temperature.

Freundlich Adsorption Isotherm

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CO_(2) gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of CO_(2) adsorbed becomes 64 times when the pressure of CO_(2) is doubled. The value of n in the Freundlich isotherm equation is ________ xx 10^(-2) . (Round off to the Nearest Integer)

Assertion: According to Freundlich: x/m k.P^(1//n) Reason: The isotherm shows variation of the amount of gas adsorbed with temperature.

Correct eqution of Freundlich isotherm is :

In Freundlich adsorption isotherm, at moderate pressure extent of adsorption (x/m) directly proportional to P^(x) . The value of x is

In Freundlich adsorption isotherm at moderate pressure, the extent oof adsorption (x/m) is directly proportional to P^x . The value of x is

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