Which one of the following statements is corr | vedclass

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(A) The Freundlich adsorption isotherm is given by the equation $\frac{x}{m} = kP^{1/n}$ (for gases) or $\frac{x}{m} = kC^{1/n}$ (for solutions).In th

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The difference in the initial and final concentrations of the adsorbate gives the value of '$x$' in Freundlich equation ($x=$ mass of adsorbate)

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(A) The Freundlich adsorption isotherm is given by the equation $\frac{x}{m} = kP^{1/n}$ (for gases) or $\frac{x}{m} = kC^{1/n}$ (for solutions).In this equation,'$x$' represents the mass of the adsorbate adsorbed on the mass '$m$' of the adsorbent.Option $A$ is correct because the amount of adsorbate adsorbed $(x)$ is determined by the change in concentration of the adsorbate in the solution before and after adsorption.Option $B$ is incorrect because '$n$' is a constant depending on the nature of the adsorbent and adsorbate.Option $C$ is incorrect because chemisorption increases with an increase in the surface area of the adsorbent.Option $D$ is incorrect because the enthalpy of chemisorption is typically high,ranging from $80$ to $240 \ kJ \ mol^{-1}$,whereas $20 \ kJ \ mol^{-1}$ is characteristic of physisorption.

Which one of the following statements is correct?

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