Which of the following statements regarding ozone is incorrect ?

Options

A. It occurs because of vander Waal's forces
B. More easily liquefiable gases are adsorbed readily
C. Under high pressure it results into multi molecular layer on adsorbent surface
D. Enthalpy of adsorption `(DeltaH_("adsorption"))` is low and positive.

Answer

To determine which statement regarding ozone is incorrect, let's analyze each of the provided options step by step.

1. **Statement 1: It occurs because of Van der Waals forces.**
- Ozone (O₃) is a molecule that experiences Van der Waals forces, which are weak intermolecular forces. This statement is correct.

2. **Statement 2: More easily liquefiable gases are adsorbed radially.**
- Ozone is a gas that can be adsorbed on surfaces, and more easily liquefiable gases tend to have stronger interactions with surfaces. This statement is also correct.

3. **Statement 3: Under high pressure, it results in a multi-molecular layer on the adsorbed bent surface.**
- Under high pressure, gases can form multi-molecular layers on surfaces due to physical adsorption. Ozone, being a gas, can indeed form such layers. This statement is correct as well.

4. **Statement 4: The energy of adsorption (ΔH adsorption) is low and positive.**
- The energy of adsorption for gases like ozone is typically negative because adsorption is an exothermic process. A positive ΔH would imply that energy is absorbed, which contradicts the nature of adsorption. Therefore, this statement is incorrect.

Based on the analysis, the incorrect statement regarding ozone is:

**Answer: Statement 4 is incorrect.**