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What is the use of Freundlich adsorption isotherm plot?


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Solution

Freundlich Adsorption Isotherm

  • “Freundlich, in 1909, gave an empirical relationship between the quantity of gas adsorbed by unit mass of solid adsorbent and pressure at a particular temperature.”

Equation given by Freundlich

  • The relationship can be expressed as follows:-

xm=kp1nn>1

  • Here, x is the mass of the gas adsorbed, and mass m of the adsorbent at pressure p.
  • k and n are constants that depend on the nature of the adsorbent and the gas at a particular temperature.

Use of Freundlich adsorption isotherm plot

  • It is utilized for the low-pressure adsorption of gases by solids.

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