What property of molecules of real gases is indicated by Van der Waals constant 'a'? (ii) has larger molecular size ?

Explanation

To answer the question regarding the Van der Waals constant 'a', we can break down the solution into clear steps:

### Step-by-Step Solution:

1. **Understanding Van der Waals Equation**:
The Van der Waals equation is given by:
\[
\left( P + \frac{a n^2}{V^2} \right) (V - nb) = nRT
...