QJEEM18Ch3039: JEE Main 2018 Chemistry - Class 12 JEEM18Ch3039 Solution: If x gram of gas is adsorbed by m gram of adsorbent at pressure …

Question

Verified Solution • 2025–26 Session moderate

If x gram of gas is adsorbed by m gram of adsorbent at pressure P, the plot of log

\frac{x}{m}

versus log P is linear. The slope of the plot is :
(n and k are constants and n > 1)

Accepted Answer

According to Freundlich adsorption isotherm, in the median range of pressure

\frac{x}{m} \propto P^{\frac{1}{n}}

\Rightarrow

\frac{x}{m}

= kP

^{\frac{1}{n}}

taking log both sides, we get,

log

\frac{x}{m}

= logk +

\frac{1}{n}

logP

Here in graph between log

\frac{x}{m}

and logP, slope is

\frac{1}{n}

and intercepts = log k.

Step-by-Step Verified Solution