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JEE Main20238 Apr 2023Morning ShiftChemistrySurface ChemistryActual

Which of the following represents the Freundlich adsorption isotherms? (A) (B) (C) (D) Choose the correct answer from the options given below:

Options

  1. AA, C, D only
  2. BA, B only
  3. CB, C, D only
  4. DA, B, D only

Correct answer

D. A, B, D only

Step-by-step solution

The equation x m = KP 1 / n represents Freundlich adsorption isotherm. It is an empirical relationship between the amount of gas adsorbed by a given amount of solid adsorbent surface and pressure of the gas at a particular temperature. So, Freundlich adsorption isotherm equation is x m = KP 1 / n ⇒ log x m = logK + 1 n logP Extent of adsorption x m decreases with increase in temperature. With the help of the above two equation, following plots are obtained

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