A container with a specific volume “V” changes to “2V.” What happens to the average distance between gas molecules? Assume that pressure and temperature of the gas remain constant.

At constant pressure and temperature, the gas has the same number of molecules per unit volume for a given state, but doubling its specific volume means the molecules are spread through twice as much volume per unit mass. The typical spacing therefore increases (by a factor of the cube root of 2). The correct choice is “Increase.”

AI-written and checked against the verified answer.