Question

Consider the adsorption of N2 on ZnO. The adsorbed volumes of N2 at 223 and 533 Torr are 1.16 and 2.08 mL g-1 which is calculated at 273 K and 1 atm.

1. Assuming Langmuir adsorption, what is the adsorption capacity in mL g-1 of ZnO for N2?

2. Assuming Langmuir adsorption, what is thd adsorption affinity in Torr-1 of ZnO for N2?

3. 1 molecule of N2 has surface area of 16.2 A2. What is the specific surface area in m2g-1?

4. Assuming Freudlich adsorption (Vad = kp^n), what is k for N2 adsorption on ZnO?

5. Assuming Freundlich adsorption, what is n for N2 adsorption on ZnO?

Answer 1