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JEE Main 201910 AprilMorning Shift

Exam: JEE Main
Year: 2019
Date: 10 April
Shift: Morning Shift
Subject: Chemistry
Chapter: Surface Chemistry

JEE Main 2019 · 10 April · Morning Shift · Chemistry · Surface Chemistry

A gas undergoes physical adsorption on a surface and follows the...

A gas undergoes physical adsorption on a surface and follows the given Freundlich adsorption isotherm equation

\dfrac{x}{m} = k{p}^{0.5}

Adsorption of the gas increases with:

Options

ADecrease in $p$ and increase in $T$
BIncrease in $p$ and decrease in $T$
CIncrease in $p$ and increase in $T$
DDecrease in $p$ and decrease in $T$

Correct answer

B. Increase in $p$ and decrease in $T$

Step-by-step solution

\dfrac{x}{m} = {k}_{p}0.5

Physical adsorption increases with decrease in Temperature.
According to relation

\dfrac{x}{m} ↑

on

P ↑

So adsorption increases on increasing pressure.

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