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JEE Chemistry · Medium

Surface Chemistry: Freundlich adsorption isotherm MCQ

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Freundlich adsorption isothermMediumQuestion 890003

Question

The Freundlich adsorption isotherm: x/m = k p^(1/n). At high pressure, x/m is:
  1. A
    Proportional to p (1/n → 1)
    Correct
  2. B
    Independent of p (x/m = k)
  3. C
    Zero
  4. D
    Infinite

Correct answer

Proportional to p (1/n → 1)

Explanation

Freundlich isotherm: x/m = kp^(1/n). At low p: x/m ∝ p^(1/n). At high p: 1/n → 1, x/m ∝ p. At very high p: adsorption becomes independent of p (surface saturation).

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