What is the difference between physisorption and chemisorption?

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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.

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