In which of the following conditions, the distance between the molecules of hydrogen gas would increase?
(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the container
Some hydrogen gas leaking out of the container will result in the availability of more free space for the remaining hydrogen molecules. Hence, the particles will be able to move more freely and the distance between them will increase. Increasing the volume of the container of hydrogen gas will also result in the increase of motion of particles. There will be more space available for the particles to move. As a result, the particles will move away from each other causing an increase in distance between them.