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# According to Freundlich adsorption isotherm, which of the following is correct?

(a) $\frac{x}{m} \propto p^1$

(b) $\frac{x}{m} \propto p^{\frac{1}{n}}$

(c) $\frac{x}{m} \propto p^0$

(d) All the above are correct for different ranges of pressure.

Answer: All the above are correct for different ranges of pressure.

at low pressure $\frac{x}{m} = kp^1$.
at high pressure $\frac{x}{m} = kp^0$
at intermediate pressure $\frac{x}{m} = kp^{\frac{1}{n}}$