Question

For the adsorption of a gas on a solid, the plot of log (x/m) versus log P linear with slope equal to:

• A. K
• B. log k
• C. N
• D. $\frac{1}{n}$

Answer 1

The correct option is D $\frac{1}{n}$

For the adsorption of a gas on a solid $\frac{x}{m}=k{p}^{1/n}$. This equation is known as Freundlich Adsorption Isotherm.

On taking logarithm on both sides, we obtain, $log\frac{x}{m}=logk+\frac{1}{n}logp$
∴ plot of log(x/m) versus log p will be linear with slope = $\frac{1}{n}$ .