What is the difference between physisorption and chemisorption?

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A)
FeaturePhysisorption vs. Chemisorption
$1$. Nature of forces$Physisorption$ involves weak van der Waal's forces,whereas $Chemisorption$ involves strong chemical bonds.
$2$. Compound formationNo new compound is formed in $Physisorption$,while new compounds are formed in $Chemisorption$.
$3$. Reversibility$Physisorption$ is generally reversible,whereas $Chemisorption$ is usually irreversible.
$4$. Enthalpy of adsorption$Physisorption$ has low enthalpy $(20-40 \ kJ \ mol^{-1})$,while $Chemisorption$ has high enthalpy $(40-400 \ kJ \ mol^{-1})$.
$5$. Temperature dependence$Physisorption$ is favored by low temperature,while $Chemisorption$ is favored by high temperature.
$6$. Molecular layer$Physisorption$ is multi-layer,whereas $Chemisorption$ is mono-layer.

Explore More

Similar Questions

Which of the following forces is responsible for physisorption?

Physical adsorption is essentially quite appreciable:

Why do physisorption and chemisorption behave differently with a rise in temperature?

The graph of $\log(x/m)$ versus $\log p$ is a straight line with an angle of $45^o$ and an intercept of $0.3010$ on the $y$-axis. Calculate the amount of gas adsorbed per gram at a pressure of $0.2 \, atm$.

What is adsorption,adsorbate,adsorbent and desorption? Explain with appropriate examples.

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo