Which of the following is absorbed in minimum amount by charcoal ?
a CO2
b SO2
c CO
d H2
Please explain giving reason.
Dear Student,
Greater is the critical temperature of a gas, greater are the Van der Waal's force of attraction and thus greater is the adsorption on the charcoal surface. Now, greater the molecular mass, greater is the critical temperature. This means greater the molecular mass, greater will be the adsorption of gas on the charcoal surface.
Molecular mass of CO2=44 g
Molecular mass of SO2=64 g
Molecular mass of CO=28 g
Molecular mass of H2=2 g
Hence, H2 will be least adsorbed on the charcoal surface.
So, the correct answer is (d)
Greater is the critical temperature of a gas, greater are the Van der Waal's force of attraction and thus greater is the adsorption on the charcoal surface. Now, greater the molecular mass, greater is the critical temperature. This means greater the molecular mass, greater will be the adsorption of gas on the charcoal surface.
Molecular mass of CO2=44 g
Molecular mass of SO2=64 g
Molecular mass of CO=28 g
Molecular mass of H2=2 g
Hence, H2 will be least adsorbed on the charcoal surface.
So, the correct answer is (d)