Question

Whenever a mixture of gases is allowed to come in contact with a particular adsorbent under the same conditions, the more strong adsorbate is adsorbed to greater extent irrespective of its amount present. For e.g. $H_{2}O$ is adsorbed to a greater extent on silica gel than $N_2$ and $O_2$. This shows that some adsorbates are preferentially adsorbed. It is also observed that preferentially adsorbable adsorbents can displace a weakly adsorbed substance from the surface of an adsorbent. Which of the following gase(s) is/are adsorbed to maximum extent?

• A. He
• B. Ne
• C. Ar
• D. Xe

Answer 1

The correct option is D Xe

Gas which can be easily polarized are adsorbed to a higher extent as compared to others as force of attraction is more here so, they are adsorbed more.
Due to larger size and more number of electrons, Xe is most polarizable gas so, Xe is adsorbed to maximum extent.