Define adsorbate.

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

Increasing order of boiling points in the following compounds is:

$\underset{\left(\mathrm{i}\right)}{{\mathrm{CH}}_3\mathrm{COOH}} \underset{\left(\mathrm{ii}\right)}{ {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHO}} \underset{\left(\mathrm{iii}\right)}{{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}} \underset{\left(\mathrm{iv}\right)}{{\mathrm{CH}}_3{\mathrm{COCH}}_3}$

$2.0 \mathrm{g}$ 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            

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