Question

The basis of data given below , predict which of the following gases shows least adsorption on a definite amount of charcoal?

Gas	${H_2}$	$C{H_3}$	$C{O_3}$	$S{O_3}$
Critical temp$(K)$	33	190	304	630

Answer 1

Hint: : Adsorption is the bond of particles (or particles and molecules) to the outside of a strong or fluid. The atoms get gathered uniquely at the surface and don't enter the core or bulk part of the adsorbing material. The substance whose atoms get adsorbed at the surface is known as the adsorbate.

Complete step by step solution: The critical temperature of the gas is a major reason for whether the gas is absorbed at the surface or not. As the critical temperature increases of the gas the ability to absorb on a surface of any material also increases and lower critical temperature results in lower absorption on the surface. This is because higher critical temperature means higher attraction force between the surface and the gaseous molecules absorbed.
Now we can see according to the above table the lowest critical temperature is of the hydrogen gas and therefore, the least absorbed gas is hydrogen gas.

Hydrogen gas with critical temperature 33 kelvin.

ADDITIONAL INFORMATION:
 Adsorption of gas on a strong is an unconstrained cycle. At the point when a gas adsorbs on the strong, because of atomic cooperation measure, the entropy of gas particles diminishes. To make the cycle unconstrained, adsorption must be exothermic.
Nature of gases: Ease in liquefaction more is gas adsorbed.
The surface territory of adsorbent: More the surface zone more gas is adsorbed.

Note: Adsorption is generally portrayed by isotherms. It is because of the way that temperature assumes a significant job or that it greatly affects the entire cycle. Also, there are a few isotherm models that are utilized to depict the adsorption strategy.