In physisorption adsorbent does not show specificity for any particular gas because ______________. (i) involved van der Waals forces are universal. (ii) gases involved behave like ideal gases. (iii) enthalpy of adsorption is low. (iv) it is a reversible process.
In physisorption adsorbent does not show specificity for any particular gas because involved Van der Waals' forces are universal. It means extent of Van der Weals' interaction between adsorbate and adsorbent is constant for all gases.
