Question

why easily liquifible gases undergo physisorption

Answer 1

Answer:

Explanation:

In general easily liquefiable gases (i.e. with higher critical temperature) are readily adsorbed as the form large number of weak van der waal forces. The gas having lower critical temperature than room temperature will exist in gaseous form at room temperature. So to liquefy it we need to decrease the temperature.

Answer 2

esily liquifiable gases undergo physisorption.

this is because the gases which are liquifiable easily form van der waals forces with the surface of the adsorbent and physical adsorption is all about the formation of physical bond due to weak van der waals forces.

if the van der waals forces are high then extent of physisorption increases.

also physisorption is prefferably done in low temprature, which is favoured by the easily liquifiable gases.