Physical adsorption is noted for its almost complete lack of specificity towards any particular adso — Surface Chemistry Chemistry Question
Question
Physical adsorption is noted for its almost complete lack of specificity towards any particular adsorbate gas. What is the fundamental physical reason behind this behavior?
Answer: B
💡 Solution & Explanation
Physical adsorption arises strictly due to weak van der Waals forces. Since these dispersion forces are universal and operate between all atoms and molecules regardless of their chemical identity, physical adsorption is not specific in nature; any gas will adsorb on any solid given a low enough temperature.
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