Question

Which of the following is true regarding Freundlich adsorption isotherm?

• A. n is always greater than one, indicating that the amount of gas adsorbed does not increase as rapidly as the pressure.
• B. n is always less than one, indicating that the amount of gas adsorbed does not increase as rapidly as the pressure.
• C. n is always greater than one, indicating that the amount of gas adsorbed increase more rapidly than the pressure.
• D. n is always less than one, indicating that the amount of gas adsorbed increase more rapidly than the pressure.

Answer 1

The correct option is A n is always greater than one, indicating that the amount of gas adsorbed does not increase as rapidly as the pressure.

n is always greater than one, indicating that the amount of gas adsorbed does not increase as rapidly as the pressure.
Note: The equation $\frac{x}{m}=k{p}^{1/n}$ 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.