Question

The plot that best represents the relationship between the extent of adsorption (x/m) and pressure (p) is

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

The relation between the extent of adsorption $(x/m)$ and pressure $(p)$ is given by Freundlich adsorption is other $m$.
According to this,
$\frac{x}{m}\propto p^{1/n}(n>1)$
where, $x$ is the mass of gas adsorbed on mass $m$ of the adsorbent at pressure $p,k$ and $n$ are constant.
$\therefore \frac{x}{m}=h{p}^{1/n}$
Taking log both sides
$\log \frac{x}{m}=\frac{1}{n}\log p+\log k$
Comparing the above equation with the equation of straight line, $y=mx+c$.
$\therefore$ The graph would be linear, where slope $=\frac{1}{n},c=\log k$