Question

The adsorption of hydrogen by palladium is commonly known as Occlusion. If the statement is true enter 1 else enter 0.

Answer 1

Hint: In chemistry, occlusion is that the inclusion of 1 substance within another. Occlusion can occur if precipitation or crystallization occurs rapidly. If a crystal forms too rapidly, it's going to grow round the solvent, so a "bubble" of solvent forms inside, although it's not a part of the Bravais lattice.

Complete step by step answer:
Adsorption of hydrogen over Pt is called occlusion. it's a process of removing an adsorbed substance from a surface on which it's adsorbed, is understood as desorption. it's a process during which both adsorption and absorption occur simultaneously, the term sorption is just used.
Surface Chemistry is that branch of chemistry that shows us the phenomenon that happens on the surfaces or interfaces, such phenomenon includes corrosion. catalysis, crystallization, etc.
Adsorption: Due to unbalanced attraction forces, accumulation of molecular species at the surface instead of within the bulk of a solid or liquid is termed as adsorption. The material on the surface of which the adsorption takes place is named adsorbent and therefore the molecular species accumulating at the surface is termed as adsorbate.
(i) ${{O}_{2}},{{H}_{2}},C{{l}_{2}},N{{H}_{3}}$ gases are adsorbed on the surface of charcoal.
(ii) Silica gels adsorb water molecules from air.
Charcoal, silica gel, metals like Ni, Cu, Ag, Pt and colloids are some adsorbents.
Important Characteristics of Adsorption:
1. it's specific and selective in nature.
2. Adsorption is a spontaneous process, therefore change in free energy (ΔG)is negative.
$\Delta G=\Delta H-T\Delta S$
For the negative value of $\Delta G$,in a system, within which randomness decreases, ΔH must be negative. Hence, adsorption is often exothermic.
Adsorption of hydrogen over Pt is named occlusion.
Desorption: It is a process of removing an adsorbed substance from a surface on which it's adsorbed, is thought as desorption.

So the correct answer is 1; it is known as occlusion.

Note: Adsorption is that the process of adhesion of molecules of liquid or gases onto the surface of a solid particle. Absorption may be a bulk phenomenon where molecules of absorbate enter into the absorbent. Adsorption could be a surface phenomenon where the molecules simply attach to the surface of the adsorbent