Question

The value of a in van der Waal equation is _____________ /dependent on ___________

(a) pressure

(b) temperature

(c) pressure and temperature

(d) independent of pressure and temperature

I had been asked this question in an interview for job.

I would like to ask this question from States of Matter topic in section States of Matter of Chemistry – Class 11

Answer 1

Correct answer is (d) independent of pressure and temperature

For explanation I would say: Value of an in van der Waal equation represents a measure of the magnitude of intermolecular attractive forces within the gas and it is also independent of temperature and pressure. The van der Waal’s equation is given by (P – an^2/V^2)(V – nb) = nRT.