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Freundlich reaction

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Freundlich reaction

Posted by Dgf Chd 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 4 years, 1 month ago

Observation

(i) At low pressure, the graph is almost straight line which indicates that x/m is directly proportional to the pressure.

x/m ∝ pz

x/m = Kp

where K is constant.

(ii) At high pressure, the graph becomes almost constant which means that x/m becomes independent of pressure. This may be expressed as:

x/m = constant

x/m ∝ p⁰

x/m = K p⁰

(iii) Thus, in the intermediate range of pressure, x/m will depend upon the power of pressure which lies between 0 to l i.e., fractional power of pressure (probable range 0.1 to 0.5).

This may be expressed as

x/m ∝ p^1/n

x/m = Kp^1/n

where n can take any whole number value which depends upon the nature of adsorbate and adsorbent. The above relationship is also called Freundlich’s adsorption isotherm.

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