In Freundlich Adsorption isotherm, the value of 1/n is:

In Freundlich Adsorption isotherm, the value of 1/n is:
A 1 in case of chemisorption
B between 0 and 1 in all cases
C between 2 and 4 in all cases
D 1 in case of physical adsorption

Detailed Solution

Freundlich adsorption isotherm: $\frac{x}{m} = kp^{1/n}$ (n > 1)
At low pressure $\frac{x}{m} \propto p^1$ and at high pressure $\frac{x}{m} \propto p^0$.
So the value of $\frac{1}{n}$ lies between 0 and 1.

Adsorption isotherms in past papers

3 questions from this chapter have appeared across 3 exam years.

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Practise Adsorption isotherms All 3 questions This chapter in 2012 AIPMT-PRE