On the basis of data given above predict which of the following gases shows least adsorption on a definite amount of charcoal ?
Physical Adsorption -
If the accumulation of gas on the surface of a solid occurs on account of weak van der Walls forces, the adsorption is termed as physical adsorption or physisorption.
adsorption directly proportional to critical temperature.
As we have learned in the gaseous state the smaller the value of the critical temperature of the gas, lesser is the amount of adsorption.
so least adsorbed gas is H2 at its LT is 33K