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P/x/m Vs P curved in languir adsorption isotherm is?

P/x/m Vs P curved in languir adsorption isotherm is?

Grade:12

1 Answers

Arun
25750 Points
6 years ago
 
Lagmuir derived the expression given below:

\frac{x}{m}=\frac{ap}{1+bp}Lamuir adsorption isotherm

The values of constants “a” and “b” depends upon the nature of adsorbate, nature of solid adsorbent, and temperature. “p” is equilibrium pressure

Lagmuir theory has limitations. This theory of unimolecular adsorption is valid only at low pressure and high temperature.

As the pressure is increases or temperature is lowered, additional layer starts forming . This leads to multilayer adsorption.

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