JEE Main 2020ChemistrySurface ChemistryMediumNumerical

JEE Main 2020 — Surface Chemistry Question with Solution

JEE Main 2020 (06 Sep Shift 2)

Question

For Freundlich adsorption isotherm, a plot of log x/m y-axis and log px-axis gives a straight line, the intercept and slope fo rthe line is 0.4771 and 2, respectively. The mass of gas, adsorbed per gram of adsorbent if the initial pressure is 0.04 atm is _____  ×10-4g.

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Show full solutionCorrect answer: 48
Correct answer
48

Step-by-step explanation

xm=kP1n

logxm=logk+1nlogP

Slope =1n=2

So n=12.

Intercept ⇒ logk=0.477

So k=Antilog0.477=3

So xm=kP1n

30.042=48×10−4

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About this question

This is a previous-year question from JEE Main 2020, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.