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Get Answers to all your Questions
5.5 What is an adsorption isotherm? Describe Freundlich adsorption isotherm.
Answers (1)
The adsorption isotherm is a relation curve between the variation in the amount of gas adsorbed by the adsorbent with pressure at a constant temperature.
Freundlich adsorption isotherm- Freundlich gave an empirical relationship between the quantity of gas adsorbed by a unit mass of solid (adsorbent) and pressure (at a particular temperature).
- At high pressure-
[independent of P ]
- At intermediate pressure
for n>1 k and n are constant (depend on nature of gas) Here x = mass of gas adsorbed, and m = mass of adsorbent at pressure p
On taking log both sides-
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