Differentiate between adsorption and absorption.

Given:



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

Define the following term : Adsorbent

$2.0 \mathrm{g}$ of ${\mathrm{H}}_{2 }\mathrm{gas}$ is adsorbed on $2.5 \mathrm{g}$ of platinum powder at $300 \mathrm{K}$ and $1$ bar pressure. The volume of the gas adsorbed per gram of the adsorbent is $\mathrm{mL}$

(Given : $\mathrm{R}=0.083 \mathrm{L}$ bar ${\mathrm{K}}^{-1}{ \mathrm{mol}}^{-1}$)

Write three differences between adsorption and absorption.

$3.12 \mathrm{g}$ of oxygen is adsorbed on $1.2 \mathrm{g}$ of platinum metal. The volume of oxygen adsorbed per gram of the adsorbent at $1 \mathrm{atm}$ and $300 \mathrm{K}$ in $\mathrm{L}$ is            

$\left[\mathrm{R}=0.0821 \mathrm{L} \mathrm{atm} {\mathrm{K}}^{-1} {\mathrm{mol}}^{-1}\right]$

One gram of activated charcoal has total surface area equal to 10³ m². If radius of a gaseous molecule is 10^-8 cm and the gas shows only monolayer adsorption on the surface of charcoal, then volume of gas at STP adsorbed on total surface of $\frac{\text{22}}{7}$ g charcoal is.

$5 \mathrm{mL}$ of $0.3 \mathrm{M}$ acetic acid is shaken with $5 \mathrm{g}$ activated charcoal. The concentration of acetic acid is reduced to $1/3$ of original molarity. The weight of acetic acid adsorbed per $\mathrm{gram}$ of charcoal is

An equal volume of gases ${\mathrm{NH}}_3, {\mathrm{CO}}_2$ and ${\mathrm{CH}}_4$ are adsorbed by one gram of charcoal at $298 \mathrm{K}$ in the order: