At exceedingly high pressures, what mathematical limit does the exponent approach in the empirical Freundlich adsorption isotherm, causing the model to deviate from experimental reality?

Question

At exceedingly high pressures, what mathematical limit does the exponent $1/n$ approach in the empirical Freundlich adsorption isotherm, causing the model to deviate from experimental reality?

Prashant Kotian · Accepted Answer

Correct answer: C. At highly elevated pressures, the solid surface becomes entirely saturated, and the extent of adsorption () becomes completely independent of further pressure increases. Mathematically, , meaning must strictly approach 0.

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