Question

Which will be adsorbed more easily on the surface of charcoal- NH3 or CO2 and why?

Answer 1

The higher the critical temperature, the more easily a gas is liquefied that is larger the vander waal's force of attraction and hence more readily it will be adsorbed.

Critical temperature is that above which a gas cannot be liquefied how high the pressure may be applied.

NH₃ gas has higher critical temperature than CO₂ therefore it will be adsorbed more readily than CO₂.