Question

Freundlich equation for adsorption of gases (in amount of g) on a solid (in amount of mg) at constant temperature can be expressed as:

• A. $log\frac{x}{m}=logP+\frac{1}{n}logK$
• B. $log\frac{x}{m}=logK+\frac{1}{n}logP$
• C. $\frac{x}{m}\propto P^n$
• D. $\frac{x}{m}=P+\frac{1}{n}logK$

Answer 1

Answer: (B)

$log\frac{x}{m}=logK+\frac{1}{n}logP$

Freundlich equation for adsorption of gases (in amount of g) on a solid (in amount of mg) at constant temperature can be expressed as folows:

$log\frac{x}{m}=logK+\frac{1}{n}logP$.

It is obtained from the following expression:

$\frac{x}{m}\propto P^{1/n}$ or $\frac{x}{m}=K{P}^{1/n}$

Taking log on both sides, we get

$log\frac{x}{m}=logK+\frac{1}{n}logP$