Statement I: For a van der Waal's gas, the constants 'a' and 'b' are independent of pressure and tem — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

The van der Waals constants 'a' and 'b' are characteristic properties of each specific gas and are independent of temperature and pressure (Statement I is correct). There is no actual physical substance that perfectly obeys the van der Waals equation under all conditions; it is merely an approximate model for real gases. Thus, Statement II is incorrect.