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Physical Chemistry Question on Adsorption

Adsorption of a gas on a solid surface follows the Langmuir isotherm. If kakd\frac{ k_a}{k_d}=1.0 bar-1 , the fraction of adsorption sites occupied by the gas at equilibrium under 2.0 bar pressure of the gas at 25 °C is
( ka and kd are the rate constants for adsorption and desorption processes, respectively, at 25 °C)

A

14\frac{1}{4}

B

13\frac{1}{3}

C

12\frac{1}{2}

D

23\frac{2}{3}

Answer

23\frac{2}{3}

Explanation

Solution

The correct option is (D): 23\frac{2}{3}